Strength of JPM - better than MS?

A little bit of a bait title, so I apologize for that.

Was pretty shocked to see a poll done by Matt at Peak Frameworks where JPM NY lost to MS NY 44% - 56%; I expected the margin to be larger. Because I'd assume that most of the people voting in the polls are pre-professional students, I wanted to hear from those who are in-industry about whether (or not) JPM lags behind MS/GS in terms of IB. For context, I'm in the market for a 2024 SA gig.

1) Really, how different are JPM/MS/GS from one another (esp. considering M&A league tables from LTM where JPM edged out MS)? Seems like distinctions aren't made too much on the basis of volume - is it more attached to exit opps and workflows? 

and, 2) how should someone think about JPM vs some of the independent strategic advisory firms (PJT/CVP/EVR) aside from the classic BB vs EB considerations? At what point would it be well-reasoned to opt for the boutique model over a historically strong BB like JPM.

Would also be helpful if anyone has a more nuanced perspective about JPM groups (specifically their top teams, which I understand to be M&A, HC, and M&C) and if they maintain an executional focus. 

Also, this is not meant to be a prestige question. Genuinely trying to understand the competitive positioning of JPM relative to peers and what it would mean for the exit opps/career of one thinking of a SA with the firm.