Personally, I only back Kickstarters when they've demonstrated a clear plan and I have good reason to think they can actually deliver on what they promise. As a result, I back very few Kickstarters (mainly Pinball Arcade's, Book of Unwritten Tales 2, Cosmic Star Heroine, and the risky Soul Saga) and I'm not sure either Yooka-Laylee or Bloodstained will join them. Iga doesn't demonstrate jack **** in his Kickstarter pitch. His entire pitch is "I made Castlevania, motherfuckers (with recycled assets from Rondo of Blood for more than a decade, which nearly killed the franchise until Lords of Shadow revived it)! So give me money!" There was no proof of concept, and very little information on the game in general. Also, Inticreates can't even create a Mega Man knock-off right now on-time and under-budget, so I have very little faith in them.
By contrast, Yooka-Laylee has proof of concept footage, and the people making it have excellent pedigree. My issue with them is the ridiculous level of scope creep they've allowed with their stretch goals, and I don't believe for a moment that they can create the kind of game they want in the time they've promised with the money they even have now.
Also, if you believe their Kickstarter monetary goals (I don't), neither Kickstarter needs my money and, in fact, it will actually be cheaper for me to purchase both of these games at launch w/ whatever PS+ discounts they'll inevitably have.