Pulis is happy to admit Arsenal are in a different class, in particular after viewing last week's stunning Champions League win over Barcelona up close.
Ignoring the shock FA Cup draw at Leyton Orient on Sunday when boss Arsene Wenger fielded a weakened side, Pulis knows the Frenchman is likely to parade his strongest line-up as the Gunners look to close the gap at the top of the table to one point on leaders Manchester United
"I went to their game with Barcelona, and it was a fantastic game," said Pulis, whose side visit the Emirates Stadium for what is a re-arranged fixture that was initially postponed before Christmas due to bad weather.
"But in watching that game I can say we're not on their level, I think everybody accepts that. So we just have to go there and do our best, and that's what we'll do.
"We have to be switched on. It's a game we know will be very, very difficult, even if we play at our best. If we don't, then we're in trouble."
Source: PA
Source: PA