From a practical point of view I would expect the pull fan to better ventilate the corners of the room. On the push side the flow is more directional and I think with a push fan you’re more likely to end up with turbulent flow in the corners which would noticeably slow air transfer from these regions. From this point of view it’s possible that the 2 x pull configuration may actually be better than 2 x push + 2 x pull but I’m no expert.
Of course if the air speed is low then the difference will be minimal.
From a practical point of view I would expect the pull fan to better ventilate the corners of the room. On the push side the flow is more directional and I think with a push fan you’re more likely to end up with turbulent flow in the corners which would noticeably slow air transfer from these regions. From this point of view it’s possible that the 2 x pull configuration may actually be better than 2 x push + 2 x pull but I’m no expert.
Of course if the air speed is low then the difference will be minimal.