The Warriors need to beat the Leicester Tigers at Welford Road to secure qualification and the openside flanker says they have to be careful not to overreach for it.
"I think qualifying would feel similar to winning the PRO12, it would be incredible," said Chris. "We have not achieved it before and as a squad there is an excitement behind it and we feel we are so close.
"We are even a bit desperate, we have been so close in the last couple of seasons. To actually get to the last game and to the point that if we win we go through, there is a lot of excitement.
"But that is why our preparation is so important going into this game and training has been good, we feel we are in a good place. There is a lot of energy about even though we lost the last game, the boys are feeling good because they know what is coming and what we can achieve if we play to our best.
"I think we just remain positive. A lot of good things have been said this week by the team leaders.
"We know that if we go down there and win then we will qualify. Saturday was close a game, yeah, it would have been nice if we'd won it, but now we have to go down there and win it, it's as simple as that."
Leicester have had a difficult season but have a formidable home record.
"It's something we have talked about," continued Chris. "They are a very proud team. Their record at home is pretty amazing so we are going down to Welford Road expecting a very different animal to what we played here.
"It's quite a hostile ground, it's a bit narrower and heavier a pitch, so I think they will try and target us up front again. It will be a very physical game down there."