>>539202950
My 2+2 set is 204.5 CV I think, but it has more useful substats. So if your 2+2 set is better it could definitely be a lot harder to beat. I agree that it's much easier to shove the set onto somebody else because Ineffa is extremely hungry for stats. Here's a comparison between my SMS set that clearly needs a lot of work and my 2+2. You can see that she gains about 6k from her A1, Birgitta and LC, and then her Burst is 9k but that's every other rotation so that's about 4.5k. However, for my team (Lauma/Neuvilette/Furina/Ineffa) I think I gain more damage from the EM and reaction buff on the rest of my team. She's very hard to calculate exactly, frankly, so I could be wrong. Roughly it's 3.2k granted to the LC total and then 600 per Bloom so it's probably pretty damn close.
TL;DR yeah 2+2 Ineffa is fine just shove SMS on somebody else until you have a godly set.