Warframes Comparison

Ash
Durability: 8/19, + invisibility
Damage: Average: Poor vs. mobs, good vs. single targets
Crowd Control: Poor
Mobility: 1.15 Sprint + Teleport
Best Ability: Smoke Screen
Best at: Being Ninja

Banshee
Durability: 12/19 (4 way tie for 12th)
Damage: Good
Crowd Control: Average
Mobility: 1.1 Sprint Speed
Best Ability: Sonar
Best at: Ranged combat
Notes: Ultimate does not give you damage immunity, so it can be dangerous to activate

Ember
Durability: 12/19
Damage: Excellent
Crowd Control: None
Mobility: 1.0 Sprint speed
Best ability: Overheat
Best at: Killing Infested

Excalibur
Durability: 11/19
Damage: Good
Crowd Control: Average
Mobility: 1.0 Sprint Speed, Super Jump
Best at: Being average.
Best Ability: Slash dash

Frost
Durability: 1/19, + Snow Globe
Damage: Average: Good vs. Crowds, poor on single enemies.
Crowd Control: Good
Mobility: 0.9 Sprint Speed
Best ability: Snow Globe
Best at: Defense and Hijack
Notes: If you see a Frost, stay inside their Snow Globe, especially if you are about to die.

Loki
Durability: 19/19, + invisibility
Damage: Poor
Crowd Control: Good
Mobility: 1.25 Sprint Speed + Switch Teleport
Best Ability: Invisibility
Notes: Invisibility comes with a damage buff for melee.

Mag
Durability: 7/19
Damage: Good
Crowd Control: Good
Mobility: 1.0 Sprint speed
Best Ability: Pull
Notes: Don’t forget to bring Bullet Attractor for boss fights.

Nekros
Durability: 16/19
Damage: Poor
Crowd Control: Good
Mobility: 1.1 Sprint speed
Best Ability: Desecrate
Best at: Pull is the best first power
Notes: Nekros is a support frame and can effectively double the amount of loot you get on a mission.

Nova
Durability: 17/19
Damage: Excellent
Crowd Control: Poor
Mobility: 1.2 Sprint speed, Worm Hole (group teleportation)
Best Ability: Molecular Prime
Best at: Killing crowds
Notes: Glass cannon. Amazing against crowds.

Nyx
Durability: 12/19
Damage: Poor
Crowd Control: Excellent
Mobility: 1.1 Sprint Speed
Best Ability: Chaos
Best at: Crowd Control
Notes: Best crowd control Warframe in the game, good at high level content.

Rhino
Durability: 1/19, + Iron Skin
Damage: Good
Crowd Control: Average
Mobility: 0.9 Sprint Speed, 1.15 with Arcane Vanguard Helmet, Rhino Charge
Best Ability: Iron Skin
Best at: Nightmare missions, Tanking

Saryn
Durability: 4/19
Damage: Good
Crowd Control: Poor
Mobility: 0.95 Sprint Speed
Best Ability: Miasma
Best At: Nothing. Rather rounded actually.
Notes: Tanky caster. Good vs. crowds.

Trinity
Durability: 12/19, + Blessing and Link
Damage: Poor
Crowd Control: Poor
Mobility: 1.0 Sprint Speed
Best Ability: Link
Best at: Healing/Tanking
Notes: Trinity is very good at supporting and healing other frames.

Valkyr
Durability: 6/19, + 600 armor which means she gains a lot more from Vitality than other frames
Damage: Average
Crowd Control: Average
Mobility: 1.1 Sprint Speed + Ripline
Best Ability: Ripline
Best at: Melee
Notes: Valkyr will probably get a buff, as her abilities are a bit underwhelming at this point. Ripline takes some practice to use properly, but is a lot of fun.

Vauban
Durability: 18/19
Damage: Average
Crowd Control: Excellent
Mobility: 1.0 Sprint Speed
Best Ability: Bastile
Best at: Crowd Control/Defense
Notes: A must have on defense missions.

Volt
Durability: 5/19
Damage: Excellent
Crowd Control: Poor
Mobility: 1.0 Sprint speed, Speed ability dramatically increases movement speed
Best Ability: Shock
Best at: Rushing
Notes: Best against Corpus.

Zephyr
Durability: 3/19
Damage: Poor
Crowd Control: Good
Mobility: 1.15 Sprint Speed, Tailwind
Best Ability: Shock
Best at: Rushing
Notes: Balanced frame, very fast.

To rate durability, I took 2 x shields + armor adjusted health at level 30, but with no mods. Shields were doubled in my durabilty rating because they regenerate.

Warframe Wiki info