at the rate that linux changes, experiences from 10 years ago are not very relevant.
I've been using Linux, AIX, and solaris at work on servers for the last 15 years, and when I started there were tasks that did not work nearly as well on linux as on the other *nix flavors, there is very little difference nowdays, especially once you consider linux running on the Sparc or Power hardware.
On the Sparc hardware, Linux long ago passed Solaris for anything except possibly the beefiest hardware (I remember showing my Sun Sales rep a Sparc box running Linux and seeing his jaw drop at how much faster Linux was than Solaris, and this was over 10 years ago, but on what was at that time low to medium end Sparc hardware.