I assume you mean the F-test? Before doing any quantitative statistical test I would examine the data for unusual data points (special or assignable). Understand these first before doing any quantitative test. It looks to me as the means are about the same, but the variances of the 2 groups are different. I have no context for the scale, so I don't know if the variation in those values is of any practical significance. The MSE will be estimated by the average of the variances of the 2 groups. In this case, that variance will likely be large, so the test of differences will likely yield no significant difference between the mean of the 2 groups.
"All models are wrong, some are useful" G.E.P. Box