Quoted from Tranquilize:I just don't see gnr pulling the sales that Metallica and Maiden did. They don't have the continued presence that the other bands do. Who likes fat, lazy, narcissist Axel? They don't have much for good art or overall branding. Plus it's a recycled theme that is purely driven by one of the members of the band.
I'll admit my bias here. I was a metal head growing up and could never understand the popularity of this band. Axel sounds like a constipated duck.
It really depends on if GnR is lights out awesome - or not. I like Metallica and ACDC over GnR (but I much prefer GnR over Maiden).
For me looking at the recent rock band themes I would go with: ACDC > Metallica > Aerosmith > GnR > Maiden.
That said GnR is very popular - and sometimes themes take a back seat to a great pinball design and rules.