Micro 4/3s probably has a slightly wider variety of lenses because there's a number of manufacturers, but the impression I have is that they're much more focused on zooms. For primes the Fuji glass is very hard to beat, although the oldest lenses (the 35mm 1.4 was one of the first launch lenses) are a little hesitant to focus compared to the newer ones.
Micro 4/3s probably has a slightly wider variety of lenses because there's a number of manufacturers, but the impression I have is that they're much more focused on zooms. For primes the Fuji glass is very hard to beat, although the oldest lenses (the 35mm 1.4 was one of the first launch lenses) are a little hesitant to focus compared to the newer ones.