Originally Posted by
DL-Don
I had the same problem last year on China Eastern PVG-DEL. Seatguru and their web site asserted the A330 was 1-2-1 with lay flats but instead got 2-2-2 with angled flats. Most uncomfortable J seat I've had in a decade.
MU has four A330 versions:
2-2-2 angled (332)
2-2-2 angled (333)
2-2-2 lie-flat (33E)
1-2-1 lie-flat (33H)
SeatGuru shows all four. On the MU site you can see the aircraft type (332, 333, 33E or 33H) to know what it is on the flight and date in question. You can also (usually) see the seatmap on delta.com.
The problem is that aircraft tend to be often changed. I've had 333 changed to 33H only to be changed back to 333.
If you actually checked (tried to book the flight on en.ceair.com) and saw 33H aircraft type, then it was likely subbed out later. Happens often.