91 / 90 / 106 / 130 / 106 / 77
^Heatran
85 / 70 / 90 / 115 / 105 / 60
^Deck Knight's spread.
OK, so I realize I might be being pedantic with this comparison stuff. Obviously plenty of Pokemon have lower stats than other Pokemon, and serve different purposes. I mean, the moveset definitely makes a difference, right?
Hell, our Fire Pokemon is part Grass! Even if it is completely outclassed in every stat by Heatran and...o wait...the special move set probably isn't as good as Heatran's...it still has...subseeding right?!!
Eh, comon guys. Give our guy something besides the obvious cool typing. Yea, Fire / Grass is awesome as it is; it hits 7 types SE, is only resisted by Dragon and Fire, is only defensively weak to 3 types not used too often, Rock, Flying and Poison, and it has obvious advantages in a certain weather. Alright, so typing wise, we've got a cool start.
To not take advantage of this unique start and go even further is sad, however. Making a mini-Heatran (and honestly, Steel / Fire with Flash Fire is every bit as good as Fire / Grass) or a Typhlosion-clone just seems to be such a waste of potential. Even worse is trying to compensate this by claiming that we are making it efficient in a strategy based on its secondary typing already utilized effectively by various Pokemon (SubSeeding).
There seriously aren't too many viable OU Fire Pokemon that can hit the physical side hard, while there are plenty of Fire Pokemon than can hit the special side hard. Having a spread of 100 Atk / 70 SpA is significantly different than 70 Atk / 100 SpA, and not simply due to the numbers.
Of the main Fires used in OU, Heatran is obviously the one used the most as a defensive one. However, it is always specially defensive. Look at what our Fire / Grass would hopefully be coming in against or even have to potentially face; Garchomp, Gyarados, Tyranitar, Metagross, Weavile, Heracross and Swampert. All of those are physical threats. The three Pokemon it would be switching in or potentially facing that are special are Heatran, Salamence (potentially physical) and Gengar. Note, I'm just looking at the top 20. This would seem to imply that our guy should be a physically defensive build. How many Fires do you know that could switch into that list of Pokemon? Only Tyranitar and Gyarados might give you troubles with CB Stone Edge or DD Stone Edge.
Of course, that's merely about the offensive and defensive stats...what about HP and Speed? Honestly, I don't really care about Speed (though you SubSeeder-fanboys should, since higher Speed is beneficial to that strategy), but I certainly care about HP. HP is easily the most underrated of the defensive stats. I can't begin to explain how significant HP is to surviving hits on average.
Remember, by increasing HP, we're going to be stat efficient.
110 HP / 80 Def / 80 SpD is more defensive on average than 90 HP / 90 Def / 90 SpD. Just to clarify this, let's say we choose generic spreads of 252 HP / 96 Def / 160 SpD Bold. This would give us 424 HP / 242 Def / 236 SpD for the first spread and 384 HP / 264 Def / 256 SpD for the second spread. For both Defense and Special Defense, the second spread is inferior. 424 * 242 = 102608, 424 * 236 = 100064. 384 * 264 = 101376 (lower), 384 * 256 = 98304 (again, lower).
You yourself, Dane, have stated how if we gave this Pokemon Chlorophyll that you would like for it to be as efficient as possible without Sun. Well, assuming we remain consistent, I would appreciate it if our Pokemon was as efficient as possible without having to resort to SubSeeding. This would mean higher HP, of course.
Forget about the unique factor...if we want to maximize efficiency, higher HP is more advantageous than higher individual defensive stats.
EDIT: I am just going to state that I find it absolutely ridiculous that you guys are even considering building a spread that emphasizes an overly common strategy for the secondary typing. I understand the movepool being influenced by Grass...but our Base Stat Spread?! Jesus Christ. And it isn't even something interesting...it is SubSeeding...