First-half goals from debutant David Amoo and Zoumana Bakayogo proved the difference as Rovers retained their place at the summit on goal difference from Doncaster.
"It's pleasing we've come off and we're still top of the league and there are only 19 to go now - we're counting them down," he said.
"It was a tough game, they're a good side. They don't come much tougher. We've ground it out, rather than being fantastic. We've had to dig deep at times and we've defended well when we've had too, the clean sheet is the most pleasing thing.
"We're 12 points clear of Crawley and four wins is a lot to make up. I think the gap is ten points with the play-offs. Listen to me talking about play-offs. We would have been happy with 50 points six months ago.
"We've just got to keep going. If it's meant to be, it'll happen there's no doubt about that. But all we can do is try our best."
Crawley manager Richie Barker felt his side were unlucky not to get something from the game, but admits they face a tough few weeks in their bid to stay in the play-off shake up.
"The difference was that they were slightly more clinical in the final third," he said. "I wouldn't disrespect them and say they didn't play as much football as us, but I thought we had by far the most possession and we've more than matched a team sitting at the top of the league.
"We had a couple of spells of intense pressure where we camped in their half for a while, although I did feel there was a couple of times where we let attacks fizzle out too many times.
"It's going to be a tough month, with Sheffield United away, Tranmere away and then Swindon and Doncaster at home. We've pretty much got all the top sides in the space of a month, so we've got to hang in there and make the best of it that we can."
- Sports & Recreation
- Zoumana Bakayogo
- David Amoo