Man Utd's Ferdinand: Liverpool's Suarez-Sturridge partnership still needs to prove itself
The pair have already netted 14 goals between them this season but Ferdinand suggests they need to sustain that scoring form to be classed as a top quality twosome.
"In this country and in football in general I think we build people up too quickly," Ferdinand told BT Sport.
"That's not to say they're not a great partnership - they're proven at the moment. They're on top of their game and they're playing very, very well. They've scored some great goals.
"But I think you judge partnerships over a period of time. Look at [Dwight] Yorke and [Andy] Cole, [Teddy] Sheringham and [Alan] Shearer.
"These types of partnerships aren't developed overnight over a course of part of a season, it's over a period of time. So I think it's better to give these people time."
For the big stories and the banter follow us on Twitter: @tribalfootball