Jol disagrees the result is so clear.
"Even when I go to Brentford for an FA Cup game it could be difficult," he said.
"In England it's different you know, in Germany if you go to a lower league team, or in Holland, nine out of 10 games you will win easily, but here in England it's a different style, different approach, different attitude.
"It's the same all over. If you score goals you have to open up, you must pressurise them to force them to make mistakes, especially the smaller teams and of course Palace are probably one of the smaller teams.
"I would not underestimate one team in the Premier League," he said.
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