I consider d4 and e4 to be slightly superior to c4 because c4 does not allow a bishop to move out and places a pawn slightly off-center. D4 and e4 are practically equivalent, but since e4 also allows the queen more room, I am inclined to say e4 is superior to d4.
e2 will not be occupied becaus it is in the way of the bishop, and won't really give the queen much scope. f3 will almost certainly be occupied by a knight in 1.e4 openings. g4 and h5 will both be protected by a black knight on f6, that is of course, those squares aren't already blocked by a white knight or bishop. Such a statement that the queen has more scope after 1.e4 is absolutely ludicrous.
Hi, Cameron. Personally, even though I no longer play neither of these 'openings', I don't believe 1.e4 is any better than 1.d4; either one of these initial opening moves is to be considered equal by most leading masters today.
However, on a level of preference only, one could say that 1.e4 is 'better' [for him/her] if they prefer or excel in openings [as White] that are most likely to lead towards open positions/games; the same being true for 1.d4, should a particular player prefer openings that are most likely to lean towards closed positions/games.
On the other side of the coin though, 1.d4 [to date] has become a more preferred or modern choice of initial opening moves among leading masters only because it has a reputation of being more solid, as 'that' centralized pawn is consequently already protected by the queen. Any inherent 'downside' to the Queen's Pawn Opening is that one is limiting [or delaying] immediate choices towards kingside development and castling there.
With 1.e4, naturally, the centralized pawn is hanging, albeit, only temporarily. Whether 'that' is going to become a later weakness [or strength, perhaps] or not depends entirely on the precise opening/defence by either player; however, the inherent 'pros' of the King's Pawn Opening immediately open active diagonals for the queen and king's bishop, and consequently 'attack' or influence more squares initially than does the Queen's Pawn Opening, inclusive of accelerating [perhaps preferred] kingside castling.
To sum up then, I really don't believe that any one of the other remaining 18 initial White opening moves are to be seen as being any 'worse-off' [nor better] towards that of inferior/superior initial-move choices [than 1.e4 or 1.d4]. I firmly contend that there's still much more left to gain in opening theory amongst those lesser-known initial moves for both Black and White.
And that's the way 'I' see it! ...