The one thing I will say for edges and spine height, it definitely gives me more confidence looking at my bat and knowing it's a big lump that can hit a ball much further than I ever will.
Most of us are the same, and yet we also know(for those who have been playing years) the modern bats are no better for hitting further than the bats with small edges like a Mjolnir from 30 years ago or a Salix Pod from 20 years ago.
Still the idea we are holding something more substantial works for a bit of extra confidence when we walk out to bat.
Bats changing into twice the size has been the biggest change from when I started playing and the most successful marketing idea I can think of....
The whole game is so much in the mind, batting especially.if there's a perceived advantage available, chances are we take it and ignore the reality that it makes no difference.