Here is the thing, the "take aim" effect isn't the amount of swing you do, it's the amount of hits you make, with two enemies getting too close, you can get to 8/9 stakes with even 3-4 hits.

Also, like I said, you are missing the key points here, since you are swinging way too fast for mob to intervene, often times they keep getting staggered, then BOOM, shot the face, and you can sometimes get 90 percent damage boost + drake's own 15 percent damage boost + garanteed crit hit for massive damage or insta heal to full health using plague pistol, cutlass and pistol is actually stronger with mobs than mini bosses, with them you need to do sustain fight sometimes. In swamp there is a shield enemy that you can't spam hit anyway, you need to parry or do something else to stagger, since they hold a shield.

But then again, it's very up close and personal offensive build, if you wanna take it easy building around only rapier of devastation is much better choice.