I've been levelling an Engi the past couple of days and in the scenarios I've noticed that 2/3rds of the classes chosen by destro are casters.
Of these the majority are WE's, then those little yoda types and those skateboarders - the rest appear to be mostly Maurders.
In Tier 1 it's generally a whitewash against them - they're unbalanced and while they tend to work together (mostly alts I think) they're easy to disrupt enough to break any tank.
In Tier 2 they have (as an individual) better resists and therefore it's much harder to bypass the front line and harass. Their tanks appear well setup and they are much more of a PIA.
I noticed that in both tiers they have more borderline characters to the tier above - whereas Order had middle-tier characters.
Which I think indicates that Destro are levelling them faster or sticking to the lower Tier for longer to maximise kills.
Destro had more guilded players in Tier 1 than order. Most of the order players, while some are alts, weren't part of a guild.
The play style of Order was organised but it's hard to tell if they were experienced War players or if they were just from other MMO's.
I would guess from chats I had with them that it was about 50/50. Some were into War but were Alt'ers (people who have a ton of alts) - usually part of a small guild where a majority of their friends didn't like/couldn't play (due to lag/client issues) War.
Tier 1/2 RvR has been slow - while in Tier 1 the BO's have the usual flip-flop between order/Desto - I've not seen much change-over of the BO's & Keeps in Tier 2.
In Tier 1 it's easier to have/get-together a small group to take the BO's - in Tier 2 it takes a larger, more organised group to take the keeps. Which again reflects the mid-tier characters of Order.
The main counter for Order I think, is to expand alliances to include much smaller Guilds and therefore have a broader reach of online players.
Players who have a carry-over guild from other MMO's are reluctant to join another Guild when their friends have account and might play again in the near future.
Just my take on the lower Tiers.
Edit: Post coffee Spel check