Glad Klopp went with him, over Benteke for the FW position whilst Sturridge was out.
Benteke's average passing completion % is... wait for it, 66.6 (65.4 away from home in PL). With stats like that, you can see why Klopp doesn't trust him to start for us, without us being countered on (especially away from home) from a bad pass by him.
Firmino's a weird one, because at times I think he's looked quite casual making the pass and tends to underhit them. But his average is 76% with an average of 32 passes per PL game, compared to Benteke's 20.
Besides Firmino's consistent goalscoring, his underlying numbers show he passes more and passes more accurately, and for that reason alone I'd have him over Benteke no matter what, even if his goalscoring dries up, which it inevitably may.
Edit: Just for comparison, Origi's pass completion: 80%, Sturridge's (although a small sample): 75%, Ings (see before): 71.2%, Ibe: 83%, Lallana: 80%, Coutinho: 78%. Benteke's far below these and it's easy to see why Firmino doesn't really have much competition for the starting berth as the main ST, besides for Origi and Sturridge, as of now.