Yep, 13" MBA to 14" MBP is a step up in weight, but 15" MBA to 14" MBP is practically the same (about the weight of a Snickers bar difference).Yes but if you were int he market for a 13 the 14 is substantially heavier and bigger. I tried it and it made a real difference to me when travelling. Their m3 release decisions models and configurations are a real pita