Wow lots of people are liking Tauros... I wonder what I'm missing, isn't this very similar to Machamp EX? Yeah you hit for a lot but then your opponent KO's you pretty easily the next turn right?
I think you just named your problem; you're thinking of it as simply "Colorless version of a card that didn't live up to the hype." Try looking at it for itself.
To begin with, this is a Basic Pokémon-GX; all the benefits of being a Pokémon-EX but (so far) none of the baggage. I know that is gonna change, but not until future releases.
It has a good (not great, but still good) 180 HP. Fighting Weakness is a drag, but apart from
Passimian Rush (Pass'n Rush? XP) decks, I'm not sure if we'll see a lot of additional Fighting. No Resistance is typical and yeah, that Retreat Cost of [CCC] is chunky and kind of hurts... but then again this is a tank, a wall that can fight back. So being stuck up front is usually not a problem.
Tauros-GX has three attacks. "Rage" is time tested and proven; while not great, it is very good as hitting
Tauros-GX for between 40 and a KO results in it improving its offense. Hitting it for
less than 40 (to go for a lopsided 2HKO) means
Tauros-GX turns to its second attack, "Horn Attack". I think being a long term player helps me notice this a bit easier; 60-for-two is still a good, solid deal. Not something to build a deck around, but enough that something taking the time to 2HKO
Tauros-GX "safely" is still being setup for a 2HKO itself. If
Tauros-GX strikes first, definitely setting up for a 2HKO. "Mad Bull-GX" still costs just [CC], and if
Tauros-GX has just six damage counters on it, that is enough to OHKO 180 HP (or less) targets. 70 damage on it means 210 HP or less fear it, 80 means 240 HP or less, 90 means 270 HP or less. Notice how
Tauros-GX hasn't even lost half of its HP yet, but already Mad Bull-GX can OHKO anything sans protection or boosted HP scores? Yes, using your once-per-game Pokémon-GX attack, but remember that
Tauros-GX doesn't demand you build your deck around it.
I haven't even gotten to what you can do with a deck that has a few common bits of support that work well with it.
Double Colorless Energy (or similar Energy acceleration) allows you to ready it in one go.
Fighting Fury Belt adds +10 damage and +40 HP; great in general and even better for a Rage-Style attacker!
Ninja Boy allows you to surprise an opponent with it. This is basically
the Pokémon-GX for pre-existing decks that don't want to pass up a new resource (GX attack) but don't want to dramatically restructure themselves. In fact, it can work with
new decks as well; due to the nature of GX attacks, it is unwise to build your deck around them, anyway, so having a second Pokémon-GX to provide an alternative GX attack is not a bad thing. In fact, it seems like it may be a pretty good idea.
Tauros-GX cannot reach the heights of the more specialized Pokémon-GX, but it does not have to; this is a general usage Pokémon!