The first quarter of 2011 is up against an incredibly difficult comparison to Q1 2010.
Firstly, it faces a difficult comparison since the sales in the first three months of 2012 were unusually high.
The company has a difficult comparison with last year when there were many clearance sale events as goods bought under the previous management were sold off.
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But the picture grows rapidly more complicated as more questions are asked, making detailed assessment and comparison difficult.
Frustratingly, banks introduce their own quirks into VAR calculations, making comparison difficult.
Although the comparison is difficult, he thinks that Stanford is ahead because it has a different industry focus than MIT.
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Because we've improved our methodology this year, it's difficult to make a direct comparison with prior lists.
However, any comparison between the teams is difficult after the Scuderia finished their preparations away from prying eyes in Bahrain.
But comparison with previous periods is difficult because the club's latest accounts cover a 10-month period, rather than the usual 12.
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These difficulties - not to mention social differences - make comparison of crime rates between countries difficult.
But be careful, Wal-Mart's costs are so low in comparison to its competitors it will be difficult to force them up enough to make Wal-Mart feel the pain.
At the same time, the connection couldn't be so strong that the keyboard would be difficult to remove. (Hence the Moleskine comparison: the designers wanted a book-like cover that users could easily peel away.) Presented that way, it sounds like a compromise, but Microsoft seems pleased with the results.
Consumer analysts watching the airline distribution tug-of-war worry that taking away options for price comparison makes shopping for low air fares more difficult.
This not only makes it difficult to figure out how much college will cost, it also makes comparison shopping almost impossible.
These obscurities make the task of comparison-shopping for the most affordable and appropriate college even more difficult.
The historically difficult relationships with Serbia, Romania and Ukraine, all home to Magyar minorities, look chummy in comparison.
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