if not more so就是说日本人大力抨击本国政客以及东电官员的无能,而这种抨击力度与任何外国人相比都是有过之而无不及
用英语改写的话,可以如下所示：
In fact,compared with foreigners,the Japanese themselves have been as critical as or even more critical of their politicians’ apparent haplessness,and of TEPCO officials’ evasions and obfuscations.