The quality difference between Lennon and Townsend is overstated. Andros is by far the more proactive and direct (and admittedly wasteful). He will keep trying to get into dangerous situations and has no fear of taking the chance himself. Something that Lennon is loathe to do, he doesn't have the confidence in his own technique to take the shot, or make that pass.
Townsend as much as pretty everyone will disagree has better vision and range of passes either foot than Lennon. Think of his dinked left foot cross for Paulinho's goal in the EL, or in the same match he whizzed a couple of dangerous low right foot crosses. Or also think of the reverse dink through ball he played For Soldadao against Norwich (Soldadao was unfortunately offside). Lennon couldn't play a pass like that and never has, he lacks the technique and belief in himself to do so.
I'm getting the "hes better when hes not playing" vibe with Lennon everyone talks about him at the apex of his form as seen in 09/10 but that was half a season and we haven't seen it since. If we asses his actual performances, competition and replacement is somewhat overdue. Now whether Lamela or Townsend confine him to the bench is up to them and also how he responds.
You are right, most people would disagree, I've seen nothing from Townsend that shows a better range of passing, but just my view.
For me, Townsend naturally does what Lennon needs to be encouraged to do, which is take on the defender, use your natural pace, make the defense uncomfortable, draw fouls, draw extra defenders.
The issue is a PL game is not Townsend's personal stage, honestly 4, 5, 6 shots on goal, usually directly at keeper is unacceptable at this level unless you have no other option. He needs to be a team player, think 3 passes, 1 shot, not shot, shot, shot, oh wait I have teammates? still shoot.
Honestly Lennon needs to respond, but suspect we may seem him simply because he's a little more flexible in terms of being able to play on left, either way it's a long cry from the days of if Lennon got injury the whole pace and width of team died.