It's obviously picking up nearly twice as much material, directionally speaking, as a MK5 in cardiod setting, since it's basically two hypers pointing in opposite directions.
I don't mean to be a nit-picking jerk, but I'll play the tech geek and make a factual correction on the "obvious, directionally speaking" thing-
A bi-directional microphone (fig-8) is going to pick up
less sound than a cardioid, not more, in terms of sound arriving from all directions around the microphone averaged together. Yes there is maximal pickup from two opposing sides, but overall, there is considerably less pickup across the entire 360 degree sphere.
That may be counter intuitive, but might make more sense by recalling that all intermediate pickup patterns (subcard, card, super, hyper) can be considered a combination of omni and bi-directional components, mixed in different ratios. An omni is least directional overall, and picks up the most sound possible averaged across all possible directions. A bi-directional figure-8 is the opposite of that, it picks up the least amount of sound 'over all directions averaged together' than any other pattern, and in that sense it is the
most directional 1st order pattern. All other patterns lie somewhere between those extremes, are created by combining those two most basic patterns, and have varying degrees of sensitivity to sound from all directions averaged together in direct correspondence to that mix ratio.
What confuses things a bit is that although a bi-directional microphone really is the
most directional pattern in the sense described above, that directionallity is manifest over two opposing directions. Usually when we talk about directional microphones we're thinking in terms of sound arriving
directly on-axis verses all other directions (which is to say averaged across all directions, or all directions combined). In that sense a hypercardioid is 'most directional' in that it has the highest ratio of sensitivity to sound arriving on-axis (from directly in front only) in comparison to all directions on average. And a supercarioid has the most even 'off-axis' sensitivity overall, since it's smaller rear lobe provides an off-axis sensitivity which is less varied across all directions on average.
Apologies for the OT techy stuff. I'll step out of the conversation now.