Significantly, but not completely wrong. You say sundial can be used by any deck, but this is only partially true. Without light quanta, sundial is rather bad. Yes, it delays damage, but what after that? You're still back in the same situation you were a couple of turns ago. Yes, bone wall/Otyugh are strong, or bone wall/firestorm. Those also require a dual-color strategy, and dual-color simply isn't strong in this environment without mana fixing.
You are missing the point. If you have a deck that has some issues getting set up in the early game but is absolutely great after a few turns, running some upped dials is great. Think of it as a free mini-Phase Shield, which it sort of is.
I never said that you had to use the hasten ability to make it worth your while, I said that any deck is capable of playing Sundial. Sure, some decks can actually use the hasten ability, but if all you need is something to stall for a couple of turns, just slap upped dials in the deck and you are fine. You still get two turns of setup (unless they destroy it), which, of course, means you get two turns to draw further into your deck and get set up. The overwhelming glut of decks with Sundial (because it is so inexpensive to play and unbelievably powerful) makes some measure of counter-Sundial strategy a must if you want your deck to be viable at all in the current metagame.
Here's the thing--if a control deck will splash light for sundial's stall+draw, an aggro deck should respect that and splash fire for a couple of explosions.
That's exactly my point. The mere fact that Sundial exists forces aggro decks to run Explosion (Steal doesn't work - it resets the timer) just to be able to win. Any card is too powerful if it single-handedly dictates the way the majority of viable deck types should be built.
The fact that you think Sundial's stall in PvP is powerful without its draw means I probably shouldn't waste time even replying to you, as you're that stupid. But if you're complaining about stalling:
Phase Shield stalls for one more turn than sundial--and it's only one way. While you can't hit the shielded player, his aether army very much
can hit you. And what happens when a mono-aether player drops a couple of elite phase dragons? "I'm too good for explosion!" And now I laugh at you as my untargetable dragons kill you.
Yet nobody whines about phase shield.
No, there are multiple cards that should, in any good aggro deck, force the running of explosions. Half the shields in this game (probably more) make an aggro strategy at the least half as effective if not more. Eagle Eye is tailor-made
to stop aggro decks.
No--here's the real reason sundial is powerful:
Four cards, splashable, chaining.
Without the hasten ability, you will not get that chain running.