@Empoleon: Ah, but think about this - Rhyperior is not only a stage 2, but it lacks the insane support pool that Fire types have obtained with the release of HGSS. That set gave us Ninetales HGSS and Typhlosion Prime, both of which have since become staples in Fire-type decks, most notably Charizard AR. Discard a Fire Energy with Roast Reveal, then bring it back into play with Afterburner; that way your hand size has a net increase of 2 and you haven't used up an energy attachment for the turn (use your DCE), at the cost of only 10 damage to your Magmortar. Highly reasonable.
And think about this: Rhyperior discards 5 cards, where Magmortar discards 3. Oh sure, there is the 0 Energy cost, but realistically you never need to do more than 150 damage. After a Reverse Time with Magmortar, your deck is at a net loss of 0 cards from the mill - with Rhyperior it's a net loss of 2. And you have no idea what those cards are.
Besides, it doesn't have to do with searching, but with setup. It is a lot easier to get out a stage-1 with 110 HP than an effective stage-3 with 170 HP. (I say "effective stage-3" because to get a Rhyperior LV.X out, you basically need to evolve a Rhyhorn 3 times.)
Anyway...you do not run Rhyperior for the sake of using Hard Crush. You use it for the sake of using Raging Drill, which has a much more dependable damage input at a lot less cost to yourself (remember, it's 30+10 per damage counter, and with Rhyperior's HP at 190 with a Belt, that damage potential can soar through the roof, with a maximum of 230 if you have a Belted Rhyperior with exactly 10 HP left, for only TWO ENERGY - Hard Crush is not needed).