In the Premier League or in any league, defeat is something that is avoided by big teams because it has the potential to repeat the next defeat in the next match and the problem is actually defeating a much weaker team because it will slightly disrupt the morale of the players. Ipswich is one of the weak teams and they are in a relegation position and should not make Chelsea lose three points when facing a team like this because in terms of quality they are far below Chelsea.
I also can't understand why Chelsea could lose to a team like Ipswich which I even assumed that Chelsea could win easily when facing the team in the Premier League. But in reality it was the opposite and the defeat experienced by Chelsea has also placed them in the top four because Nottingham Forest was still able to win in their 19th week match this season. And for the next match Chelsea must be able to win so that their position remains safe in the top four zone.
I've always watched out for games against team that are in the relegation zone and how they play against teams that are doing very well. They had nothing to loose and so they played Chelsea with full force and were able to break out Chelsea defense so easily.
Same Chelsea that said they are not in the title race are not struggling to win against a relegation ipwitch and had to go down 2:0 at the time the need the point most to help them stand strong in the top position of the league table. Look at Nottingham forest who have remained strong and are gradually going up the table and Newcastle and man city are getting right back which might end up taking Chelsea out of the top six of the table. Even with the win, ipwitch is still struggling down the table while Chelsea have lost three point that would have helped them at least to gain a strong momentum as a potential title contender.