I would say that it COULD be crunchier, if you want it to be, but at its most basic level, it is about the same. What it does have, is additional flavour (and this is why I would use it): it suits a Hard SF universe better, or even a Victorian Sci-Fi one (one of the cool parts in the supplements is rules for all kinds of different tech levels, so you could have a small expeditionary force fighting savages with no tanks, or an army with blimps, or whatever!).
I use it instead of Epic when I want to play in the Battletech universe, or my own Sci-fi setting. The unit creation rules allow me to use any kind of model I want, and I love that flexibility and creativity. Don't get me wrong - I like Epic, but without significant work, it is limited to the 40k Universe, and sometimes I want to do something different. So when I see those awesome tanks or infantry from a company that doesn't match Epic, then I can field them as something from Battletech or my own world. You can do that with Future War Commander, but this has more "crunch" to it that suits me and my desire to be a bit closer to the troops/tanks (where FWC and all the warmaster sets are great for commanders who want more abstraction).
You could, with the modules, play campaigns on land/sea/air (SL has rules for all three), and even across solar systems. Add in the TFZ space rules, and you can have fleet combat, too (although, by the point, I find it becoming more complex and abstract than I like, but that is a matter of taste). The basic rules for campaigns, though, are pretty good, and if you can set up a dedicated space with some regular players, it could be a blast. Or be like me and play by yourself (not "with" yourself as KJ likes to say).
If I had to compare SL to anything, I suppose it would be Battletech - not because the rules are similar (Battletech is more awkward, and the record-keeping is a pain for larger conflicts), but because of the optional rules. Also (and this may be just me), but SL feels like it owes something to board games with minis like Battletech: it uses minis, but it has the added depth of a board game. Luckily, it is closer to minis than board games, but if you want SOME of that old board game depth while using your toys, then it has it. Being able to choose the level of depth just makes it more appealing. Hell, you could add or remove rules depending on your mood and how much you plan on drinking.
Give it a try and let us know what you think. I don't have as much time to play as I would like, but if some people start playing, it might be interesting to have a small sub-forum where people could talk about optional rules and relate their exploits.
- Chris (to save you calling me "Tits" or "Titi"
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