First of all, I agree with jultzya, one OEM's chart does not apply to all equipment out there.
The second question I have is why do the coil temps vary so much with different equipment brands. I just but a 4 Ton 12 Seer unit in my home. The home already had the ductwork installed so I just retrofitted it. I used a 4 Ton 12 Seer Luxaire condenser with a 5 Ton Air handler and coil. I have been instructed that this will gain me a little in the effeciency. I did not however install the TXV valve I used the recommended pin instead. I understand that this hurts the Seer a bit. It seems the system has a hard time keeping up in my home. The freon is boiling at about 44F (74Lb) which seems high. (High Pressure on the Suction side) and the High pressure seems low at 175 lb of pressure. I matched the pin however it seems I may need a pin with smaller oriface. Is this a product of larger coil or of the 12 Seer of the unit. Or is my unit over charged. I added 29oz which was what the manual said for the lineset length as well as the coil installed.