Thinking Oxford is only great for humanities is definitely a misconception. It will prepare you just as well as Harvard for scientific graduate work.
The one exception is if you’re thinking of pursuing medicine later.
This. I don’t know where people get this idea that Oxford is weak in the sciences.
@DannyDan – Look for past posts by @cupcake, who studied the natural sciences at the undergraduate and graduate level at Cambridge and Oxford, respectively. He has spoken very highly of the program(me)s at both universities.
Personally, there’s not a college in the US I’d choose over Oxford, Harvard included. I was there on a research stint last year and absolutely hated to leave.
Oxford is not only a humanities school - there is a long history of mathematics at Oxford and other sciences. As others have mentioned there are different approaches to education in the UK vs US. Also different issues for non-citizens post university. You can only attend one school, so you will have to turn one down.
A cliché that is waaaaaayyyyyyy out of date. Same as the old shibboleth that Cambridge is only for math & science.
Fwiw, the top 3 universities in the world for life sciences, according to both the Shanghai and THE rankings are Harvard, Oxford and Cambridge.
The bigger decision (if you are actually choosing) is: how do you work best? Do you want the intensity of Oxbridge, or the broader education of a US university?
Oxford students frequently wash up at Harvard for post-grad- but that doesn’t mean it’s easy. It just means that the caliber of student and the caliber of education at Oxford means that they are well able for it.
But honestly, you seem to really be fixated on Harvard- so go there.
No, Oxford is not more of a humanities school. Cambridge might have the edge in some STEM subjects, but you are talking extremely fine distinctions there. Teaching and research in all subjects will be world class.
What is “concentrating in life sciences” supposed to mean? What subject did you get accepted for at Oxford?
Edited to add not that YOU will be doing much research at Oxford, unless you are going in for a 4 year MS. Oxford (and Cambridge) undergrads just learn, but in an independent way that will prepare you very well for research later on.
@Tigerle my subject for Oxford is biol. sciences. But at Harvard it would be broader, obviously
And no, I don’t want to do the additional 4th year masters option, since I would then rather go for postgrad in the US (theoretically tho, if accepted)
“learning in an independent way that will prepare you very well for research later on” sounds really good too tbh 
Thanks for your answers and opinions everybody!
It is really the choice between two very different learning styles that you will have to make, not prestige or quality, Which college, if I may ask?
And the degree does include a small independent research project which counts towards your final classification [grade]. See http://www.biology.ox.ac.uk/practical.html
That’s right, and there is of course nothing stopping you from seeking out research opportunities in the US over the summer. Just don’t expect it to be a significant part of your academic experience at Oxford. It won’t stop you from applying to grad school.
both are great but harvard may be more fun…oxford is way too traditional
It’s not stupid to choose the school you’ll prefer.
Oxford is an amazing school with a gorgeous campus and amazing, focused students around you. It’s definitely not the “wrong” choice, especially if you prefer it.
“Concentrating in life sciences,
And Oxford is mainly famous for humanities degrees”
And yet 14 Oxford alumni went on to win Nobel Prizes in Chemistry (6) and Medicine (8), to say nothing of the 10 full time faculty members that have won Nobel Prizes in Chemistry (4) and Medicine (6). Just because Oxford is far and away the #1 university in the humanities in the English speaking world does not mean it is not brilliant in the sciences. After all, that’s were Stephen Hawking went to college! 
The Oxford mentorship style is something no university in the US can match. If you like Oxford, and if it is cheaper, go for it.
Oxford. That’s why Rhodes Scholars go there.
Follow your heart! Oxford sounds right for you!
@Tigerle My Oxford offer is from Brasenose College. Why do you ask?
Thank you everybody for your opinions and help again! I appreciate it very much, especially with may 1st approaching fast and I was literally freaking out haha, but you guys helped me calm down.
Not all colleges are created equal (there are formal and informal rankings of the colleges- and a lot of opinions)
Oh look, Brasenose has been really doing well recently! https://en.m.wikipedia.org/wiki/Norrington_Table#Recent_rankings
More importantly, on recent years Brasenose has been able to accomodate all undergrads in college housing who wanted to be. https://www.bnc.ox.ac.uk/prospective-students/undergraduate-admissions/179-accommodation-rooms
Frewin Annexe is Lovely.
Check out the loveliness!
http://insidebrasenose.org/student-prospectus/
Accommodation on site, a popular bar and cafe, all makes for a good undergrad community. Also the super central location.
You know those famous aerial shots, with the Radcliffe camera in the middle? Brasenose is right there, behind the steeple of st Mary the Virgin. https://www.diarystore.com/oxford-university-oxford-ranking-oxford-tuition-oxford-courses-alumni