There can be only one

[FuzzyPlum]

There is an honest and genuine debate to be had;

Would Lindsey joining Mick, John and Chris (without Stevie) been more successful than Stevie joining Mick, John and Chris (without Lindsey) in 1975 or vice-versa? Obviously that assumes at least somebody else joins with Stevie (perhaps BW stays but LB doesn't join).
Who had the biggest impact???

The truth is, probably neither band would have sufficiently made enough waves. But of the two, who would have garnered more success?

I genuinely don't know. Depends on the other guitarist I guess.