I notice your chart conveniently omits momentum readings and downrange energy. For momentum, the 530 grain arrow will carry .5170 lb/sec at the bow and strike the target at 30 yards with 53 ft lbs of energy (1 ft lb more than the 330 gn arrow has at the bow!).

The 330 grain arrow carries only .3892 lb/sec at the bow and has dropped off to an anemic 46 ft lbs of KE at 30 yards.

The idea behind light arrows is to get flat trajectory to make up for misjudging yardage at long range. Okay, let's look at the KE/momentum numbers for these two arrows at 50 yards.

The 530 gn arrow gets to 50 yards still carrying 51 ft lbs, only 1 ft lbs less than the 330 grainer had at the bow! The 330 grainer arrives with a mere 43 ft lbs of energy. Momentum? The 530 gn arrow has .4907 lb/secs at 50 yards. The 330 grainer has .3556 lb/secs.

It doesn't matter whether you believe KE or momentum best predicts penetration potential. The heavier arrow wins on both counts.

The light arrow thing is trying to balance the flat trajectory with still having enough oomph to keep the arrow from bouncing off the animal when it gets there. Is 330 grains enough? Maybe, but I wouldn't risk it. That kind of thinking, though, is why I am so much in favor of establishing a 400 grain minimum for hunting arrows.