I think the ACT is better if you brush up on the reading you will be golden. I’m a senior and I took the ACT twice. The first time I got a 32 after brushing up on my English and Science I got a 35. You just have to put in a little work on reading and then you will have a fantastic score that will competitive at top Universities.
I was under the impression 2200=33 act (at least according to a chart published by act organization), so they seem pretty similar. Also, 99% on sat is 2200 and 99% on act is 33, which would support them being about the same. Both are great scores, congrats.
Now that I think about it, would you have to pay to send two separate SATs and an ACT? That would be three payments?? The results are great in both cases and if money is not an issue, then I would think about sending all of the scores.