Wand vs Igor would probably be a 50/50 fight at any point in their careers. Especially when it was discussed at the end of PRIDE when both were already past their primes.
Igor definitely faced some good strikers like: Gilbert Yvel, Masaaki Satake, Gary Goodridge 2x.
He also fought but lost to Cro Cop, Herring, Rampage and Overeem but no shame in losing to those guys, especially toward the end of his career. Only CC beat him on the feet. The rest beat him with grappling.
Igor was only KO'ed standing up once in 70 fights and that was to CC. He was a very skilled striker with power and timing to knock anybody out. Good grapplers were his only weakness.