True, both end up really coming down to the bar path.
As someone who was a raw competitor, SS worked better and you're 100% right, kept my elbows tucked and in turn, help all the necessary stuff i needed to get into the low to mid 500's bench wise.
But benched in PL also made me a front delt and tricep dominant presser. And the SS keeps it that way. Once venturing off into BBing, i needed more direct work on my pecs in pressing and reverse banding allowed me to do that without destroying myself. Both lighten the load in the right place, but bands allow you a little bit more variety in exactly how you are pressing.
I also have/had a terrrrrible L shoulder from college football and both the SS/reverse bands have kept that safe. Ive torn my left pec and allll of my L shoulder. Basically, both can and do work well and very similarly, but i used them as different points in my lifting career based on what i was trying to accomplish.