Nalbandian reached all 4 GS SFs too and in a time when there were specialists that made it tougher on each surface. That's an impressive achievement.
Agreed that is an impressive achievement. Some of those slam semi losses though were not so good. Losing to Baghdatis was a giant missed opportunity for Nalby and quitting against Fed at RG as well. Nalbandian at his absolute best is better than Davy. When they are both at their normal levels I'm not so sure.