The stats are:
Yew Longbow:
thrust damage 35p
speed 79
missile speed 54
SS bow:
thrust damage 34p
speed 81
missile speed 55
The difference is pretty small, Yew just 1 dmg more but SS by 2 faster. I don't think it can actually be felt while playing but perhaps some Yew Bow owner with SS Bow experience might say if he observed that +1 dmg allows a 1-shot-kill against some bots that need 2 arrows from SS. Then it would really make some difference. I moved from SS to Fiendish and that was a huge difference indeed.
Yew Longbow:
thrust damage 35p
speed 79
missile speed 54
SS bow:
thrust damage 34p
speed 81
missile speed 55
The difference is pretty small, Yew just 1 dmg more but SS by 2 faster. I don't think it can actually be felt while playing but perhaps some Yew Bow owner with SS Bow experience might say if he observed that +1 dmg allows a 1-shot-kill against some bots that need 2 arrows from SS. Then it would really make some difference. I moved from SS to Fiendish and that was a huge difference indeed.