It's probably no surprise then that I'm fond of Ironhide as well, but we should get into the differences first. I do admit, this version makes me think of the Doomslayer (the newer incarnation of the Doom Guy) and that flavors my opinion some. You all know I love to play Doom. It's funny, the similarities to games like Gears of War was an early criticism of the War for Cybertron games within the Transformers fan base. I guess opinions may vary.
In robot mode, the obvious difference is in the colors and new head sculpt. There's also some other new parts that may not be as instantly recognizable. He's got new shoulders, chest, and a new EMP shotgun weapon. I didn't notices the shoulders at first, but they are indeed different. That feels like a little extra effort that could have probably been skipped, but... Whose going to complain about extra effort? Like Rathcet, Ironhide's right forearm can be removed to attach his gun to match the game appearances. He can also just hold it, which I'm more of a fan of. If you so choose to use the gimmick, the arm can store in his robot backpack as can the gun. The axe is the same as before and can be held by both hands. Ironhide looks pretty sharp in robot mode and is very well articulated wielding his weapons in any badass pose you'd want to put him in.
Transformation is my only complaint with this toy. While I don't remember any trouble with Ratchet, Ironhide gave me a little. Those new shoulders combined with some new vehicle mode back panels proved to be a little too fiddly for my liking. There is some panel forming which may not be everyone's cup of tea, but when done well, I generally don't take any issue. The new parts didn't seem to work as smooth as the existing parts did with Ratchet. Considering these parts are usually included at design time, I'm thinking it's possibly a symptom of mold usage. He transforms the same as Ratchet, it just didn't seem to fit into place as well. That was frustrating.
Once transformed, vehicle mode looks great! While I normally like Ratchet more than Ironhide, this Cybertronian Tactical vehicle seems like a better fit for Ironhide and it looks great in his colors. Like I mentioned above, there's new vehicle mode back panels that I honestly didn't notice initially like the shoulders. Once again, I'm not complaining about the extra effort that went into the toy even though they gave me a little trouble in the transform. Thanks to the new robot mode chest, the vehicles bumper is also slightly different. It's just a neat looking alt mode that looks even better in these colors. The EMP Shotgun can store on the backside, while the axe forms a cannon of sorts on the roof. If you didn't get those back panels just right, the axe won't connect right. Be sure everything clicks into place. Ironnhide looks great in both modes, and despite some annoyance during transformation, I really like this toy. It just looks awesome, you know?