The inarguable, definitive Starter Deck Duels ranking.

From worst to best. Graded against the other decks, of course.

Ancient Discovery(RW): D-
Horrendous curve and awkward payoffs. How the mighty have fallen.
Best Singleton Bomb: Bonehoard Dracosaur
Best Synergy/Win Condition Set: Curator of Sun's Creation (When it goes off, it really goes off!)
Biggest Swing & A Miss: Anim Pakal (There are only two 2-Drops for curve, and they're both gnomes!!)
Why Are You Even Here?: Mine Raider (Look at all this treasure I didn't make.)

Outlaw Posse(BR): C-
Lots of setup without much payoff. Jasper Flint is pretty nutty, though.
Best Singleton Bomb: Laughing Jasper Flint (Hope he sticks and then win the game.)
Best Synergy/Win Condition Set: Rakish Crew? I guess?
Biggest Swing & A Miss: Deadeye Duelist (So much potential, but only 3 other cards in the deck to work with.)
Why Are You Even Here?: Cerebral Confiscation (Why are we doing this? How about another crime payoff?)

Crack The Case(WU): C+
Not a bad deck, but hit-or-miss synergies with medium payoffs.
Best Singleton Bomb: Ezrim, Agency Chief
Best Synergy/Win Condition Set: Private Eye (Genuinely backbreaking if it isn't removed.)
Biggest Swing & A Miss: Jaded Analyst (Work for your 3/2!)
Why Are You Even Here?: Griffnaut Tracker (At least it's a Detective...)

Saddle Up(GW): B-
Mount costs can be clunky, but the deck has a huge top-end.
Best Singleton Bomb: Railway Brawler (Just edges out the others through sheer power.)
Best Synergy/Win Condition Set: Congregation Gryff
Biggest Swing & A Miss: Thousand Moons Infantry (The 2 power kind of hurts its purpose in the deck)
Why Are You Even Here?: Vengeful Townsfolk (I mean, sure, but why?)

Snack Time(BG): B-
All your creatures have to fight over who gets to eat your food, so good thing you'll make a lot of it.
Best Singleton Bomb: Bristlebud Farmer
Best Synergy/Win Condition Set: Provision Merchant (Lots of food synergy to go around in the deck, but this one feels the cleanest.)
Biggest Swing & A Miss: The Huntsman's Redemption (Kinda much ado about nothing.)
Why Are You Even Here?: Sugar Rush/Titanic Growth (Four combat tricks doesn't really gel with the deck.)

Power To The People(BW): B
Best Singleton Bomb: Delney, Streetwise Lookout (Feel it's responsible for more wins than Expel Interlopers.)
Best Synergy/Win Condition Set: Wispdrinker Vampire (Stalls the game, then takes over)
Biggest Swing & A Miss: Screaming Phantom (If not a miss, then a foul ball. Why am I milling?)
Why Are You Even Here?: Rankle's Prank (I rarely want to do any of these things.)

Second Chance(UR): B+
Great synergy deck that can really pop off. Does suffer against the decks with beefier creatures, though.
Best Singleton Bomb: Melek, Reforged Researcher (Not really a bomby deck, but it's got this big boy.)
Best Synergy/Win Condition Set: Slick Sequence (80% of the time, it works every time.)
Biggest Swing & A Miss: Breeches, The Blastmaker (Fine card, but rarely gets to do the thing.)
Why Are You Even Here?: Reckless Lackey (Go away, Lackey, nobody likes you.)

Dino Might(RG): A-
Solid, reliable curve into OH MY GOD GIANT DINOSAURS!!!
Best Singleton Bomb: All of them! I mean, good god, look at them!! (Ok, I guess Earthshaker Dreadmaw?)
Best Synergy/Win Condition Set: Itzquinth (Great at 2, great at 4. Holds the fort until the big dinos arrive.)
Biggest Swing & A Miss: None of them, really? Presence of Ages is a little slow.
Why Are You Even Here?: None. They all belong. Commune with Nature, I suppose?

Faerie Pranks(UB): A
Endless faerie nonsense. They synergize, they mess with your stuff, and then you die.
Best Singleton Bomb: Roaming Throne (Double up your faerie nonsense.)
Best Synergy/Win Condition Set: Mocking Sprite (Who doesn't like to draw 2 and counter a spell for 3 mana?)
Biggest Swing & A Miss: Spellscorn Coven? (Good card, but everything it does feels a little too expensive.)
Why Are You Even Here?: Drag The Canal (Clearly a bug. It was supposed to be a 4th Mocking Sprite.)

Desert Oasis(UG): A+
From worst to best, looks like UG and RW went and swapped places.
Best Singleton Bomb: Bonny Pall (I mean, cmon. Just good lord in heaven, this goddamn card.)
Best Synergy/Win Condition Set: Outcast Greenblade (You can hear your opponent's groan through the screen.)
Biggest Swing & A Miss: None. It's all set-up and hits, baby.
Why Are You Even Here?: I suppose Rubblebelt Maverick? Little out of place, but still a fine card.