Check the EVs and IVs section of the post.
Also, welcome to Smogon's damage calculator:
Choice Specs Heatran Fire Blast v.s. 252 hp/ 252 Sp. Def Shaymin: 126.2%-149% damage.
Check your sources before making any stupid comment.
P.S.: I was the first one to use LeadMin as I know. You probably saw me before.
P.P.S.: SpecsTran Leads are Outsped and OHKOed by Earth Power anyway.
lol
1. I see no Pokémon mentioned in EVs and IVs.
2. No Occa Berry? And why the hell do you have 252 SpDef?252 Sp Atk is for hitting the hardest possible. 240 Spd evs is for outrunning base 85s with a positive nature. The rest is dumped into HP for more bulk.
3. Insulting will get you nowhere.
4. So you counter my statement that you are wrong by saying "no, but I'm right." That's fine.
5. Unless you decided to post a different, possible superior lead Shaymin set on a different forum under the username Terrador14 more than a month ago, I don't think so.