'they blew'em off the stage'

This post brought back great memories.
Golden Earring dusted Joe Cocker big time. I was not there for Cocker, that's for sure but he was realy bad, we walked out. Earring played just a few songs but eeach was a bout 15 minutes long, they were awesome and still are one of my favorite bands.
Blue Oyster Cult rocked out and were followed by Jefferson Starship. Totally different styles and once again I went only to see the former. Starship came on and I was asleep in minutes.
Scorpions destroying Ted Nugent, we walked out on Nugent he was so bad.
I went to a show that had Aerosmith headlining and Rick Derringer opening. Canned Heat was in between. Heat was treated horribly by the crowd that was itching for aerosmith and had enjoyed Derringer. It was so bad Bill Graham himself came onstage and asked the audience to show some respect. He was booed too. Aerosmith put on a great show and I guess I was lucky with some other reviews I've read from other shows they did.

Metallica opening for Ozzy in '86 on the Masters of Puppets tour.

Metallica on the Monsters of Rock tour of '88. They blew everbody away that day. Of course given the lineup(see below) it's not as impressive as blowing Ozzy away in '86.

Van Halen (headline act)
Scorpions
Dokken
Metallica
Kingdom Come

Jethro Tull completely killed Led Zeplin the first time I saw LZ. I had never even heard of Tull back then. Left (along with many others) halfway through the LZ show.

A couple of friends saw a Judas Priest/Aerosmith show in the 70s and said JP blew away Aerosmith.

OK, I have an opposite experience in the same vein. I went to see The Cult open for Metallica in 1990 and I really was not a fan of Metallica at all. I just wanted to see the Cult, and Ian Ashbury could not sing a lick at the show, which made it suck (as another aside, I saw them 4 times from 86 - 90 and twice they were phenomenal, and twice Ashbury had no voice at all). We decided to stay for the first song or 2 of Metallica and ended up staying the whole show and I bought all of their albums them. They absolutely rocked, one of the top 5 shows I have ever seen.