You can't go wrong with either, for me i upped my corvus because with him i can safely parry BPCW and emma frost where stark spidey would normally have problems parrying BPCW with armor up due to reflect stun or emma frost who is stun immune with diamond form. Corvus also lets you inflict armor break on command which helps with mysterio and killmonger, not to mention he breaks all armors at once which is great against red skull and civil warrior.For specificly the purpose of power control and for fights where crits are a bad thing, stark spidey is better so it depends on which utility you need. The ability to control power occasionally and taunt the opponent as well as handle havok and mr sinister, or to be able to armor break all armors on command which help against BPCW, IMIW and emma frost as well as killmonger and do massive burst damage with crits.
You can't go wrong with either, for me i upped my corvus because with him i can safely parry BPCW and emma frost where stark spidey would normally have problems parrying BPCW with armor up due to reflect stun or emma frost who is stun immune with diamond form. Corvus also lets you inflict armor break on command which helps with mysterio and killmonger, not to mention he breaks all armors at once which is great against red skull and civil warrior.For specificly the purpose of power control and for fights where crits are a bad thing, stark spidey is better so it depends on which utility you need. The ability to control power occasionally and taunt the opponent as well as handle havok and mr sinister, or to be able to armor break all armors on command which help against BPCW, IMIW and emma frost as well as killmonger and do massive burst damage with crits. I would venture to disagree with Corvus being that much better against BPCW. Sparkys animations and abilities make him relatively easy to play 100% stun immune. Corvus if definitely better for dealing with BPCW and EF, but Sparky has no problems handling it as well.