"Where we are now and where we could get to with that goal, that's the biggest goal he has scored, certainly in his club career," Fowler, the former Liverpool striker, said.
Salah reached his half-century for Liverpool in only 69 matches, three fewer than it took Fernando Torres.
Indeed, only two players have scored 50 Premier League goals for one club faster than the Egyptian.
It also ended a run of six PL matches without a goal for Salah, not that his manager doubted his form.
"But it's a nice moment for the first goal after a while, a really good moment."
The victory also changed the leadership of the table for the 23rd time this season, 20 more than in 2017/18.
The focus for the title race moves to next Sunday, when both of the top two are in action.
Man City can regain the No 1 spot with victory at Crystal Palace.
Then they must hope that Chelsea do them a favour and dent Liverpool's title ambitions at Anfield, as they did in 2013/14.