I only got the game last week for PC so I probably don’t know some things that you guys do. Also, the damage numbers are probably off as well since Lars’ Lightning Screw got a damage buff.
I use Lars/Guy. I put Lars on point because I feel like he’s a bit beefier and his normals are much better than Guy’s in terms of range and combo-ability (his cr. MK is really good). Also, Guy seems to really shine when his opponents are in the corner, probably more so than any other character and Lars can push opponents into the corner simply by landing a cr. MK into Dynamic Entry and its subsequent follow ups or Dyanamic Entry -> Mjolnir, cr. HP xx Lightning Thrust which yields more damage but requires more execution than mashing punch after connecting a Dynamic Entry. I still haven’t found any midscreen combos yet for the two of them, outside of TC xx MK Tatsu, tag, j. HP, cr. MK xx Lightning Thrust that is 362 damage which isn’t half bad but landing LK/MK Tatsu reliably is a bit hard and it’s an easy punish if blocked/whiff. Alternatively, the combo can be TC xx LK Tatsu, tag, j. HP, cr. MP xx HK Lightning Screw but since I don’t have the 2013 patch, the former does more damage (probably because of MK Tatsu).
On the other hand, midscreen combo coming from Lars a bit harder to do since Rising Storm is his best move to do it from but it only works off cl st. HP or cr. HP, both of which is a bit trickier to land because obviously, his cl. st. HP requires him to almost be in the front of the opponent’s face and cr. HP isn’t much better because the first hit is the cancellable hit but it has very short range. The one upside is that cr. HP can be linked into from cr. MP which is a good normal but the pushback, again, would require Lars to start the cr. MP in front of the opponent.
Corner combos are a bit ridiculous in terms of damage for either side, but more so starting with Guy. st. MP (TC) xx LP Hozanto, cr. MP xx HK Tatsu, tag, nj. HP, cr. MP, cr. MP xx HK Lightning Screw nets 422 (404) damage and this is before the 2013 patch where Lightning Screw does more damage. Guy can also add one more cr. MP before the HK Tatsu cancel but it reduces the damage to 418 but it’ll give more meter, so it’s arguable whether it’s worth the 4 damage loss.
Starting with opponent in the corner with Lars, cr. MK, Dyanimic Entry -> Lock and Load, cr. MP xx HK Lightning Screw, tag, nj. HK, cl. st. HP xx HK Tatsu is 388 damage. Similarly, Lars can vary one more cr. MP into HK Lightning Screw but the damage will be 381 but it does cause more meter gain.
In terms of boost combos, Lars has great range on his far st. MK which can boost into st. HP allowing him to get Guy in very easily. Guy has far st. MP xx st. HK for boost which is also very good but not quite as good as Lars as Lars’ far st. MK is a ‘step kick’ which can unexpectedly hit his opponents at very far ranges. There’s nothing too special coming out of boost combos from either characters; boost from Guy, cr. MP, cr. MP xx Lightning Thrust, but again, because I don’t have the 2013 patch, doing one cr. MP xx HK Lightning Screw may yield more damage. Or if boost from Lars, cr. MP, HK Tatsu, I think Guy can squeeze in another cr. MP but it may be character specific and the timing is a bit weird, so I just do one and cancel straight into Tatsu.
Over all, I think Lars/Guy is a pretty decent combo but the team doesn’t have crazy synergy like some teams have (usually involving Law, Jin, Kazuya, or Heihachi). I do find the team to be very fun though and they seem to go well, at least in terms of character design.