Stephens is always there waiting in the wings. If everyone plays well and we win, he's normally subjected to low player ratings because of his failure to provide Pirlo-esque assists.
The difference is that Izquierdo has scored several vital PL goals and assists, plus he unsettles PL defences. March hasn't, but at his age time is on his side.
March just "in parts".
He's really struggled in the PL too, anonymous / slow / weak in most of his games. No one could say that March has produced the PL goods.
Izquierdo has and is proving he's up to it.
Johnny Foreigner gets slagged off first. David Lopez faced that. Then in the pecking order, it's those from far provinces - Barnes (the west) and Murray / Stephens (north west).
March has immunity.