Warburton needs to brush up on his geography.......the winters in the likes of Germany, Denmark, Sweden and most all Eastern European countries are far more harsh than HARTLEPOOL. These mythical cold Tuesday nights when our players don't seem to be able to perform is a poor excuse.
As against that, many of those countries either have a winter break, or play Summer football.
Anyhow, I suspect that "a freezing wet night in Hartlepool" is shorthand for the notion that lower League football in england is "harder" than it's equivalent in many other countries, since all the clubs are full-time, we play an average 50-odd games a season, and the clubs within each Division are generally reasonably similar in standard. Consequently, there are few (if any) easy games, rather the season is pretty much a ceaseless grind, where the most resilient sides flourish more often than the most skillful.
To give an example, I remember reading a story about Juninho, the marvellous little Brazilian who used to play for M'boro. Soon after he arrived at the Riverside, Boro were drawn away to Notts County in the League Cup (1st or 2nd Round). when the Coach pulled up at the County Ground and he got his first look around, he couldn't believe that a 3rd Division (maybe even 4th at the time?) could have such a stadium, facilities and support etc. In fact, he was convinced that his teammates had been pulling his leg and that they'd actually been drawn to play Nottingham Forest!
Anyhow, what that demonstrates (I think) is that when signing players from abroad, it is essential that they understand and are likely to cope with demands of a nature and extent that they might not have experienced at home in their own lower Leagues.
P.S. I'm not claiming that the above stereotypes are true - if nothing else, I don't know nearly enough about foreign Leagues. However, I am pretty sure that Uwe Rosler and maybe even Mark Warburton do.