0443 GMT February 18, 2019
Last season Hamilton made it clear how much more satisfying it was to be fighting a driver from another team, as he went head to head with Ferrari's Sebastian Vettel after three years of battling previous Mercedes teammate Nico Rosberg, AutoSport reported.
Mercedes has yet to win a Grand Prix in 2018, with Red Bull also now in the mix and Kimi Raikkonen raising his game for Ferrari too.
Asked by AutoSport what it would mean to beat two rival teams to a title, Hamilton replied, "Who knows what the season holds? If it continues the way it is, it's going to be very tough to win.
"But if there's an opportunity, and we were to finish on top, it would mean even more, as it's even a tougher season than before."
Hamilton admitted that his difficult weekend in China had emphasized that Mercedes does not have the fastest car at the moment.
"My goal is obviously still the same, but it is clear from the weekend that we are not the quickest," he said.
"We've lost performance since Melbourne, and maybe more so even [at Shanghai].
"So we are second or third fastest team at the moment, so we've got some improving to do but that's not impossible,” Hamilton added.