Hmmm... well, actually, to my ears both did involve a slight unevenness (the first example in mainly one section) -- though the first one much was less. Funnily, by trying to sound "uneven" she sounded more even and by trying to sound "even" she sound more uneven ... hee hee. Sorry, mojo

.
Anyway, in order to achieve an even
sound, sometimes uneven motions (some quicker than others, ect) are required. Maybe she was relying too much on her mechanic experience than on her ears :-. She felt herself playing
mechanically uneven, and it sounded even when in the second, where she was visibly a little more comfortable, perhaps it felt more mechanically even to her and she though it sounded less even.
I guess whatever serves a person's aim is better.