No one can say Chelsea is a weak team. Chelsea is always a big and strong team although they are difficult playing at their best form lately.
Sure, Chelsea won't reach the current stage/round if they are a weak team. Don't forget that Chelsea is the leader of group E on the group stage. It proves that Chelsea is a strong team.
However, if we compare the squad quality and coach quality, Real Madrid is still better than Chelsea. Real Madrid also has a better experience and achievements in UCL. I never underestimate Chelsea squad, but I'm sure that Real Madrid will have a bigger chance to qualify for the next round. I even predict that Real Madrid will play in the final round.
As a Real Madrid supporter, I also never said that Chelsea was a weak team and should be underestimated in the quarter-finals. They have sacked Graham Potter which means they have made room for other coaches to do well both in the Premier League and in the quarter-finals of the Champions League. Of course we are favourites, but Chelsea cannot be underestimated for any reason.
Lampard and Ancelotti are two different coaches. Ancelotti is a coach who has a wealth of experience in the Champions League which will put a lot of advantages over him, so I think we should be the favorites even if Lampard is determined to build a fragile Chelsea.
Am not a Real Madrid fan but am not blind to see that Chelsea cannot in any way win Real Madrid in any of the fixture, my reason been, the club has already been shattered Graham Potter, you can imagine Chelsea, a team filled with so many great players but they keep finding it difficult to actually secure wins in their games while Madrid on the other hand are the Godfathers of the champions league, I just hope at least they should just draw one of the two fixtures to avoid any disgraceful defeat.