The awkward problem for Tottenham is that Roberto Soldado cost around £10 million more than Alvaro Negredo in the summer and, let's face it, Manchester City aren't exactly the shrewdest of operators in the transfer market.
Both players are 28, both were regular goal scorers in La Liga and both have spent the vast majority of their career lurking in the shadows behind Fernando Torres and David Villa in the Spanish pecking order.
But only one has had a real impact on the Premier League so far.
There can be plenty said for a player needing time to gel and adapt to a new league. Negredo was eased in at the Etihad - a luxury that you can easily afford when you also possess the likes of Sergio Aguero and Edin Dzeko - whereas Soldado was very much thrown in at the deep end from the off.
But, unfortunately, when you are edging towards 30 and your club has shelled out nearly 30 million pounds to bring you in, you are sort of obligated to hit the ground running.
And to be fair he did. The ex-Valencia forward started the season with two penalties in two 1-0 wins in their first two games. That should have been the perfect nerve-settling start for the striker, but he hasn't managed to kick on from there. Only two league goals have followed since, and one of those was another penalty.
Nowhere has the contrast between the two been seen more clearly than in their contrasting displays on Sunday. Negredo, battered down the Swansea door from the off, forcing the opening goal by winning a free-kick before stepping up to convert it himself from 25 yards.
He has become so important to the team in recent weeks that he was even removed from the action before Aguero, which is nothing short of a massive honour at Manchester City.
Soldado was the the exact inverse. Even up against a struggling United side he failed to really have any sort of an impact, despite the fact he was actually receiving decent service for the first time this season.
He was then removed after 72 minutes, with Spurs out searching for a winner. That speaks volumes in itself.
If you are only going to play one up front with the three attacking midfielders in behind, as Andre Villas-Boas likes to do, then you need more from your central striker than Soldado has provided so far.
There is not a more a natural goalscorer currently plying his trade in the Premier League currently than Javier Hernandez at Manchester United, but even guaranteed goals can't get him regular games. The biggest clubs need so much more.
And Spurs will continue to struggle to hit those heights until Soldado gives them more.
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