However the Mk103 was capable of using tungsen core AP ammo that should be a threat to most tanks,possible exception the TigerII. It could carry up to 6 bombs in bombbay and is equiped with dive brakes.
The main 20mm guns carried 350 rds each and 250 in the others,up to 6x20mm guns.
The Mk103 with armor piercing rounds were on 110Cs or Hs129s, though. Dedicated anti-tank platforms. The Mk103s in the 410s were purely for use against aircraft. I wouldn't expect any special AP rounds, though I suspect the round we get would be somewhat useful against tanks as it is.
But, you're a little short on your count. It carried 8x bombs internally, plus 4 extra on external racks. Total 12x 50kg for a single sortie. Or 2 larger bombs (250kg, 500kg) because they took up most of the room in the bomb bay. And... If HTC is generous... we'll get the 2x20mm external gunpod, allowing a dragged-down and heavy plane with 8x20mm cannons.
One thing why I don't think Me410 will make a better field suppression aircraft than either the 110G or Mosquito is the lack of payload in bombs. I'm almost certain that as far as big bombs go it'll carry only 2x250kg while 110 carries 2x500 and Mossie has 4x500lbs. Don't know about others but personally I find the 50kgs rather useless for my purposes. Of course the 6x20mm setup of the 410 has quite a bit of "strafing lbs" in it but dropping bombs on the house clusters in the city kills a lot of buildings...
We'll see...
The 410 ought to have 500kg options, but naturally we'll have to wait and see. Even so, I think the 12x 50kg loadout will put it ahead of the 110G/Mossie because on top of that you can also carry the WGRs. Historically this wasn't an issue, but from the way I've seen people fly these planes in AH they will fire a rocket to de-ack. Also, 50kg can be used to de-ack rather well. You come in at 10k, dive, drop 1, and pull back up. Repeat until you are out of bombs. You only have to get close and the blast wave takes out the gun. Then you still have 4x WGRs for more runs lower down. That means you have 16 tries to kill ack guns without putting yourself in point-blank range to do it. Then on top of all that you can strafe what you like with the large ammo load.
I think because of the way we use planes in the LWAs it will probably edge out the 110G for general raids, and leave the Mossie to faster lighter strikes. That seems to be what they're used for now.
That's just a hunch, though.