wow thats a tricky one,,a well made straight tip bow can shoot pretty hard,,my recurve bows have not been that much faster if any, but Im not that good at the recurve thing,, I think from what I have read,, the perfectly executed recurve would be a bit faster,,
ok that being said,, a sinew backed recurve I think is easier to execute,, because the sinew will hold the the profile a little better than a all wood bow,, and is probably gonna shoot harder than a all wood bow,,