That’s according to ex-England midfielder Alan Hudson who played for both clubs during his illustrious career.
Chelsea have been in stellar form recently, winning their last 12 Premier League games to open a six point lead at the top of the table.
They welcome Stoke to Stamford Bridge on New Year’s Eve, a team who haven’t won in their last four league outings.
“Yes, Chelsea are winning matches, but they aren’t actually that convincing for me”
But Hudson, who made over 120 appearances for both clubs in his playing days, believes the Potters can cause an upset in west London this weekend.
He told the Stoke Sentinel: “Yes, Chelsea are winning matches, but they aren’t actually that convincing for me.
“I know they knocked three past Bournemouth, but Bournemouth had two really good chances that could have changed things.
“And before that at the Bridge they only beat West Brom thanks to a late defensive mistake that put in [Diego] Costa.
“But Stoke obviously have to play well and start aiming high. I know Leicester had a lot of luck when they won that league title, but they also made a lot of that luck with their battling qualities.
“I don’t see much of those battling qualities in Stoke at the moment and if that remains the case at the Bridge then they will get a hammering.
“They can’t give [Eden] Hazard any space, for instance, because he will be off and showing us why he’s the best player in the Premier League at the moment.”
Stoke lost 4-1 at Liverpool on Tuesday while Chelsea breezed to a 3-0 victory over Bournemouth the day before.
The Potters did claim a 1-1 draw at Stamford Bridge last season after Mame Biram Diouf’s 85th minute goal cancelled out Bertrand Traore’s opener.