Whats wrong with LA beign a steampunk? There is steam, there is a world that lives by different standards then ours. All in all, steampunk genre is undefined, you can say it is almost notexistent. There is very small ammount of information about steampunk available. To exlude LE from steampunk because it doesnt reminds you of The Difference Engine is silly - it is just another form of steampunk if you will.
OP - steamboy