Help with Kyurem Fusing?

Hey all,

I've been reading up on fusing my Kyurem with Zekrom or Reshiram and although I found some helpful tips, I was hoping I could get some advice from the community on which ones would match best since this is my first time doing a fusion?

If I fused Kyurem 1 with Zekrom 1, would the 15 defense from Zekrom 1 cancel out the 14 defense from Kyurem and make the Black Kyurem a hundo? Or does it only take into account Kyurem's IVs, and it would remain a 98?

I only have enough fusion energy to do one of each, so I was considering doing the shinies first just for clout? But I also want to increase my selection of heavy hitters for Go Fest and future raids!

Any advice or help would be greatly appreciated 🙏