The 14's feel a little less stiff than the 13's and a bit wider, the cushioning also feels incredibly soft but I can't remember how soft my 13's felt when they were new. Whereas the 11's felt made to measure for me the 13's and 14's both feel like I'm wearing someone elses shoes, so I switched to the DS trainer 17, which so far has proved very comfortable. Asics told me to try the Cumulus if I wasn't happy with how the 14's felt.
Nimbus seem to have lost their way for me. The 11's were fantastic, supple, well cushioned etc, felt the 13's were stiffer, narrower and less comfortable. Tried the 14's (the grey podium edition ones), but the fit seems to have changed again? The sole felt very soft (i.e. well cushioned), but lumpy in all the wrong places??? So tried a pair of DS trainers 17's which immediately fit like a glove, initial impressions after a few runs are they are less cushioned but more athletic than the Nimbus 13's. Asics themselves recommended if I didn't like the new Nimbus 14's I should try the Gel cumulus which is also a neutral cushioned shoe, just cheaper than Nimbus. But the DS fit so perfectly I stuck with them. No unsual aches pains or strains so far with the DS. Technically the DS is is a support shoe but I can't tell any difference to the neutral Nimbus.