Leafeon > Glaceon. Glaceon is a terrible pokemon. It's movepool is unbelievably shallow.
Atleast Leafeon can be SOMEWHAT useful by baton passing Swords Dance and dealing some decent physical damage.
Glaceon is outclassed by nearly every Ice pokemon in existance. Even dewgong is arguably better due to Hydration.
Btw, Glaceon and Leafeon have the same total base stat. jesus, where do you wierdos get your information? I know it ain't serebii.
Leafeon is able to Swords Dance sweep. Glaceon can't do anything remotely close. While niether are stellar, Leafeon wins by a mile.
-Movepool: Leafeon: Leaf Blade, X-scissor, Swords Dance and Synthesis make Leafeon quite bulky. It can also use Quick Attack to some extent as a priority move. Not the best but it's possible.
-Typing: Glaceon: Both Grass and Ice suck as defensive typing but Ice wins due to better STAB
-Stat alocation: Leafeon: With high Attack, Defense and "OK" speed, leafeon makes a much better offensive threat than Glaceon. Glaceon is stuck with Massive Special Attack but terrible Speed, thus it is incapable of using it to it's full extent.
-Number of Threats: Arguably, Leafeon has an easier time agianst pokemon it's weak agianst. With high enough speed to outrun some of it's counters, and Swords Dance. It can ocasionally blow a hole right thru them. Glaceon is incapable of handling it's counters due to it's pathetic movepool and low speed.
Though both aren't stellar, I'd go with Leafeon because Glanceon can't do anything but die. While Leafeon could be an effective UU Physical Sweeper/Wall/Tank or be a Physical Master, which is a fake term created by me that means a Pokemon that has High Defense and Attack. Glanceon, on the other hand is the 3rd worse Ice type. It only outclasses Gailie the ugly face and Dewgong the mermaid. while Leafeon is the 9th most popular NU (according to Smogon) and outclasses a bunch of stuff. But Glanceon wins on looks and if I had to choose, I'd choose Leafeon in a heartbeat. So Leafeon wins my vote.