I also agree with you. Although Chelsea are in no form, they still have the ability to beat West Ham. But on the other hand, West Ham have some players who can make things happen. The match will be quite good in that respect.
What I don't do since the beginning of this season os to underestimate any team, yes Chelsea is in better form than West ham united
but then we should not underestimate West ham united for any reason.
This season have been full of surprises right from the beginning of the season, so we can still witness a surprising result in the next few hours from now.
The match between Chelsea and West ham will be very interesting, since both clubs will be fighting for a win. The two clubs are not in a good form,this make it uneasy to predict which team will win the match. Chelsea hasn't won any match in their last two matches,which makes me think they might not be able to win the game. West ham also has it's own problem so I will say that the probability of any of these two clubs wining is 50-50.
Brentford has gone nine Premier League matches unbeaten, and according to their match performance results against all Premier League big teams, they are very difficult to beat as they defeated Manchester City, Liverpool, and drew Tottenham; even though Arsenal was able to beat them 3-0 in the first leg, I believe Brentford's performance is now on a very high level because they will want to beat Arsenal just like they defeated Manchester City and Liverpool.
Arsenal, on the other hand, suffered a defeat in their most recent Premier League match against Everton last weekend, which will make Arsenal a serious side because they will want to maintain their winning consistency, just as they did in the first phase of the Premier League, so Arsenal will do their best to win the match.
Arsenal needs to win today match against Brentford but football is full is surprises and they might not be able to defeat Brentford. It might likely be a draw or Arsenal winning,though Brentford can also shock Arsenal just the way Everton did. I see that the club is in a good form and this might be a disadvantage to Arsenal.