Chelsea aint playing really good latwly and they are currently quite bad they leaded 0-1 and managed to concede a goal and this caused them to lose more points. Things need to change for them soon they arent showing any progress ingame so they can win it
Yes, it seems that Brighton could really match Chelsea's performance. Even we can see from their ball possession that they are not too far away. Chelsea this time did not play optimally. And on the other hand, Brighton played better even though the final result was a 1-1 draw.
Whereas we know that the rank between Chelsea and Brighton is very far, compared with the line-up of their players also, Chelsea has better players. But that's it. everything can happen in the field when the match is played.