Derby County beat Wolverhampton Wanderers 4-2 on Sunday.
Martin scored twice in Derby's 4-2 victory over Wolves, and his power caused Kenny Jackett's side no end of problems.
The Scotland international first slammed in a shot from range, before he showed his bravery to head home his second of the match, while under pressure from Wolves goalkeeper Emilio Martinez.
And Holloway said: "Some of the football Derby played was great and that all came because they knew Martin would hold the ball for them. That was the difference between Derby and Wolves. Benik Afobe isn't built like Martin, and Adam Le Fondre couldn't get hold of it. A player with that technique was lovely to watch."
Martin also missed a penalty in the fixture, meaning that he may feel that he should have had a hat-trick.
The Derby striker's brace still took his tally to seven goals for the season, with just 11 games played, and he looks to have established his position as Paul Clement's main striker.
Wolves, meanwhile, will be frustrated with their defeat at the iPro, as it brings to an end their positive run of results.
The Midlands outfit went into their game with Derby unbeaten in their last four matches, but they will now need to show their ability to bounce back from defeat, with Jackett's side's next game coming against Brentford tomorrow.