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Considering performance benchmarks
I want to provide plausible reasons for evaluating a player’s performance, like a small sample size or the fact that Messi had over 10 seasons at his peak. Different roles can also affect comparisons, so it’s important to be patient and not to idolize too soon. I should consider what fair benchmarks could be—like minutes played or stats like xG (expected goals) and xA (expected assists). Let’s work on crafting a thoughtful response!
 同感，这种比较太早、也没必要。几句简要看法：
- 样本太小：德甲3场只能说明有潜力，远不足以评估上限和稳定性。
- 压力管理：高期望会把舆论焦点推到年轻球员身上，反而不利于成长。管理层出来降温很正常。
- 语境差异：梅西的比较不仅是天赋，更是十多年顶级稳定性与关键战绩的复合体。
- 更合理的观察维度：持续性（至少半个赛季）、对强队的表现、数据质量（每90分钟的进球+xA、参与度）、不同体系下的适应力。 
如果你说的“卡尔”具体是哪位（全名/位置）？我可以基于他的技术特点和目前数据，给出更贴合的评价和发展建议。