The Belgians were initially blunted during a first half that lacked excitement, but they showed more adventure in the second half and opened the scoring when Michael Dawson allowed the ball to cross past him and Bart Goor smashed into the bottom corner.
Spurs were level within three minute when Jermaine Jenas was brought down by Jelle van Damme and Dimitar Berbatov sent Daniel Zitka the wrong way from the penalty spot.
Spurs will be mentioned among the favourites for the tournament but Ramos said: "We're far from achieving this. We have to wait for the draw, we have to get better because we look a bit vulnerable."
Assistant boss Gus Poyet said there was calmness in the dressing room after the incidents that soured qualification.
"I think it's not good for Anderlecht," he said.
"It's nothing to do with Anderlecht, there are always a few people.
"The lads were calm but they know how dangerous the situation could be."