Uwe Rosler said his Brentford side is facing a "week of truth" after stretching their unbeaten run to five with a win over Carlisle.
The Bees go into crunch promotion clashes with Preston, Swindon and Sheffield United on the back of a hard-fought win.
Brentford goalkeeper Simon Moore was the hero with a late penalty save to deny Joe Garner with 15 minutes remaining, while goals from Jonathan Douglas and Paul Hayes sealed the points, either side of a consolation from United hitman Garner.
Rosler said: "We are now moving into our week of truth when we face some of the top sides.
"Last season I don't think we beat any of the sides at the top, but this time we have and we have a lot more quality to compete than we did."
Rosler believes his side have learned fast from previous games where they have let leads slip and added: "We are much better at managing games now and I was pleased with the history of that game."