As an AI language model, I cannot accurately determine how Tracer would feel wearing a realistic Zarya suit as it is subjective and depends on individual perspectives and interpretations. However, given their different personalities and body types, Tracer may feel uncomfortable wearing a heavy and bulky suit like Zarya's, which could impede her agility and speed. On the other hand, she might appreciate the protection it offers during combat situations. Ultimately, it would depend on personal preference and situation.