Chelsea manager Jose Mourinho has described the Premier League title race as "unbelievable" with two points separating the top five teams.
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Monday's 0-0 draw with Arsenal leaves the Blues fourth and the Gunners second on goal difference behind Liverpool.
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"It is a unique situation, an unbelievable championship because we are all there," said Mourinho.
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Arsenal boss Arsene Wenger added: "It is interesting. The most consistent team will come out on top."
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The draw at Emirates Stadium means Liverpool will lead the table at Christmas with Manchester City in third, a point behind the top two.
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Chelsea are one point further back in fourth and level on points with fifth-placed Everton.
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Mourinho said: "OK, we don't go to Christmas as leaders, but we go with evolution because last season the championship was already lost by this point. Now, we are there.
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"Manchester United and Tottenham are not in this top four but they should be.
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"We are completely alive, especially if you compare it with this point last season where Chelsea were 11 points behind."
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In a drab match, Frank Lampard came closest to breaking the deadlock for the visitors when he hit the woodwork in the first half.
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Arsenal struggled in the most part to break down a defensive Chelsea but striker Olivier Giroud wasted two good opportunities late on to claim a win that
would have seen the Gunners leapfrog Liverpool.
Wenger was convinced his side should have been awarded a penalty when Theo Walcott went down under Willian's first-half challenge.
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"I think it was a penalty on Walcott, 100%," Wenger said.
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"After that, we played with great focus and concentration but we couldn't get the goal we deserved in the second half.
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"They locked the game up and waited for a counter-attacking chance. It took us a while to get into our flow. I thought we would win it but when we had the chances we could not take them."
Manchester United can still win that title with their current form and Van Persie and Carrick's return very soon.