Both guys had a sortie/kill percentage of 20 (20 sorties per kill).
In other words it probably took them a year to get the necessary perks for that sortie

That reminds me of a 262 kill I once achieved. Baltic map, we had the lower corner and the enemy had captured the southern airfield closest to our HQ. I was patrolling @ 12k over that airfield and was almost on way home when I noticed a plane taking off. To my utter surprise someone tried to take off in a 262. Of course you know what happened, as soon as he was out of his ack umbrella my shells were raking his jet.
Later on I checked his stats out of curiosity and it appeared it was probably the first 262 he ever rolled in that game, being flying for 3 or 4 tours at that point. But he forgot to notice the flashing base, the dot on dar and apparently never even looked around when taking of from a front line base. It was his own fault for sure, but somehow I took pity on him...