yeah it will handle as much http as you can pipe at it.
There is one thing though running php as nobody is that they can use those vampire attacks or the ones that attack forum functions in order to kill sql. With nobody your load will may real high and php will lag a lil, it can eat up the max childs. With suphp it will kill the affected users php processes for whatever you have the max set as and not spill over into affecting other users
Glad you got to field test it, now maybe people can see what Im always talking about. Its a badd ass for sure.