In other words, the T100 irons and the P770 irons are ideal for low handicap golfers. The most notable difference is that the P770 irons have a hollow head (something usually reserved for the player-distance iron category) whereas the T100 irons have fully-forged heads. The other major difference is that the P770’s have stronger lofts from the 3 iron to the 9 iron. It’s only the pitching wedge and the gap wedge where they pretty much have the same specs.
All this effectively means that the P770 irons are likely to travel a bit further than the T100 irons, but they won’t feel quite as pure.