(1983) US Festival showcasing a band at the (top) of their game.
That sounds like you're insinuating that they were at their best at that time in their career.
That seems to say that they were better then than they are now.
Vaillant 3.0 wrote:
The bonus DVD boasts the first ever commercial release of the band’s awesome 1983 US Festival show. It’s a storming set of 12 songs and showcases a band at the top of their game.