Both men made their debuts in the 0-0 draw with Norwich on Saturday and despite largely dominating the game, Rangers could find no way through, with Adel Taraabt seeing a penalty saved by Mark Bunn.
Townsend, on loan from Tottenham, made his debut in the heart of the Rs' midfield and turned in a man-of-the-match performance.
"I think we did enough to win the game, created the better chances, but you could see out there how well we played and we'll take that into the next few games," Townsend told Sky Sports 2.
"We've got massive quality. I think the signs are positive for the rest of the season."
Samba arrived in a club-record deal from Anzhi Makhachkala and went straight into the team, despite not having played since November because of the Russian winter break.
The former Blackburn man admitted it was a shock to the system to return to the pace of the English game, and was frustrated not to pick up three points.
"It's very much more an intensive style of play than it was in Russia," said Samba. "I'm obviously satisfied with the clean sheet, but very, very disappointed with the draw.
"For us there was nothing for it but a win to be back with the pack. We're really disappointed.
"We played very well, so we hope that will be enough to remain in the league. I think we'd done enough to win the game and we've been unfortunate with the penalty."