Stumbled on this today and thought it might amuse- perhaps you were there on Sept 7, 1974:

Central Park NYC on this day in 1974. Joe Perry from Aerosmith:”We played the outdoor Schaefer Music Festival in Central Park, fifty thousand people strong, where Rory Gallagher opened for us. He was a hard-drinking Irishman with his own brand of blues rock that captivated the crowd... When he finally left the stage, the crowd, wanting more Rory, started throwing cans and bottles. We set up among the flying debris. The debris kept flying during our set. Brad got hit and a broken bottle cut Joey’s arm...I remember it as the only time that we were blown off fair and square in true rock-and-roll style. That night Rory Gallagher was just too good to stop”.

Nice story!

But it should be said that when I saw Guns and Roses open for Aerosmith in 1988, Axl and co. were clearly superior as far as most in attendance were concerned.
It was like witnessing a massive explosion, followed by a harmless sparkler.

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Rip this joint, gonna save your soul, round and round and round we go......