The Foxes made it four league wins in a row for the first time this season as Anthony Knockaert, David Nugent and Jeff Schlupp all were on the scoresheet in a 3-1 win at Millwall, achieved in tough conditions in south London.
But it was not enough and Pearson's troops stay top of the table to kick off 2014 in fine fashion.
He said: "The important thing is we try and build on the first half of the season and if you're going to have any success you've got to win in different ways.
"We've had good wins recently in a footballing sense, but the conditions today meant we couldn't do so much passing. There were a lot of mistakes, but the players showed a lot of strength.
"From our perspective it was good to show we can win a physical game. We made heavy weather of it in the second half but that was as much down to Millwall's approach.
"It's certainly better to be at the top than not, but it's always going to be tight. There are a lot of good sides.
"It's a tough ask to be consistently good. We found that out last year when we had an awful run through February and March, which probably cost us promotion."