A draw is very possible because Liverpool and Arsenal don't have a significant difference in strength. However, betting on a draw is very risky, and I agree with you that BTTS is the right bet in this match.
Liverpool have conceded in their last two matches, which is the opposite of Arsenal's, but I think things will be different in this match. After all, Liverpool and Arsenal are two top Premier League teams vying for the title, so this is a prestigious match and a testament to both teams.
My prediction on this match is BTTS, I won't argue about draw between the two teams being impossible because when you watch the two teams, you will understand that they can score one another buy draw is not something am good at predicting, the two team strength at this stage of the league seems the same but we can't conclude with that, there is also possibilities that the match may favour any of the team.
I expect Liverpool to score, the same with arsenal, 0v2.5 is also possible because we know that Liverpool has that quality and arsenal on the other hand can also score more goals, I will be waiting for the outcome of the match.