Kindof hard to compare two apples to oranges, but my mighty mite at 64# 29.5" draw is currently puking 438 grain total arrows at 262 fps. That is with only a string loop and a peep.
I' m hoping my Pro deadly quiet (still on back order) will allow me to shoot without any string silencers.
I can rig up a 400 grain arrow and see what it does. I' m about to go play with my mathews and could spit some various arrows out of the MM to see what I get at 65#.

One thing is key with the infitiy cam (IMHO) it performs much better speed wise at 30" draw and maxed out. I lost/ gained 9fps when i would switch out modules between the 29 & 30" module.

More later.....