Just to throw my thouhts into the mix,
A true Warbow or a longbow designed to be used in a war situation....well we only really have the MR bows to go on and these are all self yew bows, there is evidence that they were side nocked and very heavy draw weights,..140+lbs, personally I believe the draw weights were a bit higher but 140 is a good starting pont.
laminates cannot really be classed as "True warbows", 1stly because there is no evidence of laminated woods being used for bows used in warfare in the middle ages in England, however replica heavy weight bows are made nowadays which bend full compass in the characteristic manner of a medieval warbow and can and do shoot heavy arrows a long way with great power, however these are a modern representation of what once was and as there are no heavy weight longbows used in warfare nowadays they cannot be classed in the same way as the self yew warbow of the medieval period.
The heavy weight self yew replica "warbows" that are made today, again are exactly that "Replica's" of what was once used in medieval warefare, these are not real warbows but accurate representations, there is evidence of sidenocks on the MR bows, there is also pictorial evidence that front facing horn nocks were used, the one common factor of the nocks is that they were of cow horn.
Anyway back to the question, in my opinion a "Warbow", this is a bow made for the purpose of killing people in warfare in the middle ages, some of whom may be wearing plate armour, needs to be a very heavy draw weight.... 140lb+, probably more like 160+.
Steve