准备复议求帮助

各位大佬打扰了，我一周前第一次考gre，分不高，324，不过也算是菜狗我大四除了毕业论文之外几乎唯一的努力成果（艾宾浩斯背了3遍单词很痛苦），加上本人要求不高，所以还挺快乐的，但今天作文出分我属实没有绷住。
我考完自认为作文写的不错，也许是快乐的太早把自己奶死了，作文一出2.5
我没有买什么其他的东西，作文方面只练了og和官网的题库，立论和驳论练了各10篇左右，仔细观摩了og上各三篇的6-1分范文。当天的题目是：
Colleges and universities should require their students to spend at least one semester studying in a foreign country. [Specific Task Instruction: Write a response in which you discuss the extent to which you agree or disagree with the recommendation and explain your reasoning for the position you take. In developing and supporting your position, describe specific circumstances in which adopting the recommendation would or would not be advantageous and explain how these examples shape your position.
和
The following memo was published by the Welzaton City Commission.


"A recent nationwide study of the effectiveness of wearing a safety helmet while bicycling indicates that ten years ago approximately 35 percent of all bicyclists reported wearing helmets, whereas today that number is nearly 80 percent. Another study, however, cites a 200 percent increase in the number of serious accidents involving bicycles during the same period. Meanwhile, results of a local survey of frequent bicycle riders indicate that 75 percent of those riders feel 'much safer' on busy roads when they wear helmets than when they don't. Clearly, the best explanation for the rise in bicycle-related accidents is that bicyclists take more risks now than they did ten years ago because they feel safer when they are wearing helmets."
Write a response in which you discuss one or more alternative explanations that could rival the proposed explanation and explain how your explanation(s) can plausibly account for the facts presented in the argument.

以og范文来看，除非逻辑感人或者明显缺陷、偏题，跌下3分属实罕见了点，可以看到这两篇应该都不是什么容易偏题的文章，我也一直是抓着要求在写，我的薄弱之处在于字数不够：立论文大概写了350-300字，驳论文300-250，但这对于英语写作本来就不擅长（雅思写作6）+打字很慢的我来说，已经是不错的发挥了，gre没有要求字数，且我认为我逻辑还算严密，发展的点也还算多，每个也都有举例，虽然字写得不多可能例子铺不太开，但按og的范文来看4-3分还是有的，没想到平均出了个2.5，真的欲哭无泪，请问有大神帮忙分析下可能是出于什么原因吗？还是真的光靠字数不够（可能语法拼写错一点，但我认为远远不到og说的影响理解的程度）就能给我打到2.5分？那og的范文打分真的有参考价值吗？我该复议吗？