Antonyourknee 
A waste of biomatter
Hmm that's a complicated question...It depends on what you menan by "Cute"
Assuming a purely physical comparison as opposed to a personalty analysis considering the limited context of a still image,if we take into account conventional aspects of "Cuteness" namely circular or roundish features than Glimmer has the most striking curves in her mane,the curl over her eye certainly emphasizing her cuteness. However Twilight's subtle curved eyelash's frame her eyes very well.
Glimmers horn is more rounder than Twi's more point horn but Glimmers ears are largely hidden by her mane While Twilight has one cute pony ear that flanks her face spectacularly...
Twilight wings is largely hidden and thus a non-factor and both ponies are shades of lavender but Glimms Teal streak stands out amonst the purple and her paler fur shade implies a more feminine tone as in line with the https://tvtropes.org/pmwiki/pmwiki.php/Main/PaleFemalesDarkMales Trope. Not to Imply any undue masculinity on Twilight's part as her pink streak assures us a spunky overtone.
This will require further Contemplation.
Hmm that's a complicated question...It depends on what you me
Assuming a purely physical comparison as opposed to a personalty analysis considering the limited context of a still image,if we take into account conventional aspects of "Cuteness" namely circular or roundish features than Glimmer has the most striking curves in her mane,the curl over her eye certainly emphasizing her cuteness. However Twilight's subtle curved eyelash's frame her eyes very well.
Glimmers horn is more rounder than Twi's more point horn but Glimmers ears are largely hidden by her mane While Twilight has one cute pony ear that flanks her face spectacularly...
Twilight wings is largely hidden and thus a non-factor and both ponies are shades of lavender but Glimms Teal streak stands out amonst the purple and her paler fur shade implies a more feminine tone as in line with the https://tvtropes.org/pmwiki/pmwiki.php/Main/PaleFemalesDarkMales Trope. Not to Imply any undue masculinity on Twilight's part as her pink streak assures us a spunky overtone.
This will require further Contemplation.