Comment on “Homogeneity of Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass,” by L-Y. Chen, Y-W. Zeng, Q-P. Cao, B-J. Park, Y-M. Chen, K. Hono, U. Vainio, Z-L. Zhang, U. Kaiser, X-D. Wang, and J-Z. Jiang [J. Mater. Res. 24, 3116 (2009)]