Like many, I LOVE the Ulrich Roth era, and the first few with Matthias. But by Love at First Sting, they had become so formulaic, I slipped away. Never saw them live unfortunately. I stupidly blew off going to a show at the Aragon in Chicago when Michael was with them for the Lovedrive tour. 
I saw them with that line up too - you didn't miss much let me tell you, the gig I witnessed wouldn't have been much different if they had just played with Rudolf and no lead guitarist. Michael is a man who is awkward easily and he felt hugely awkward upon his return to the Scorpions - sibling love/rivalry can only get you that far. He was clearly uncomfortable playing anything from the Roth era and was even subdued beyond recognition on the Lovedrive stuff he co-wrote. With the Scorpions the guitar roles are very much set, Rudolf plays the riffs and the more demanding and signature rhythm guitar parts (+ the occasional solo), Roth (or Jabs) play embellishments, very rudimentary chugging 2nd rhythm guitar parts (to the 1st rhythm guitar) and of course the majority of the solos. Michael obviously didn't like to be relegated to a 2nd rhythm guitar role (Jabs doesn't mind that and Roth saw it as freedom) when he wasn't soloing; both with UFO and MSG he was/is the primary rhythm player (plus all the solos of course), with a second guitarist backing up
his parts (when required, otherwise that second guitarist plays keyboards) - Michael is sort of Rudolf
and himself in one when he plays with UFO or MSG (and he had a track record with UFO not to want his guitar playing compromised by either a full-fledged second guitarist or a constant keyboarder getting in the way, hence the double role of Paul Raymond in UFO). Plus Schenker plays entirely on feel - and if that isn't right he just freezes. He was ill at ease throughout the gig and clearly unhappy. Much as I like(d) his style with UFO or MSG, the music of the Scorpions had by then developed away from him and he couldn't pick up the thread. They did right in finally settling on Matthias Jabs who'll never be an Uli Roth or a Michael Schenker in terms of inspiration (he's technically fine of course, but always a bit workmanlike), but he's a perfect Ronnie Wood (as compared to Mick Taylor) to the Scorpions. In essence (and ever since the departure of Roth), the Scorpions are the duo of Klaus and Rudolf (+ three others helping them convey the music they create as a duo).
If you liked Roth in his Scorpions era, you should certainly dig this here (featuring as a bonus accent-less English, but still the mostly nonsensical Klaus Meine and Rudolf Schenker original cliched lyrics):
