[4e]同名不同源的减值叠加吗？

[winddog]

Rattling: If you are trained in Intimidate and you
deal damage with an attack that has this keyword,
the target takes a –2 penalty to attack rolls until the
end of your next turn. A creature immune to fear is
not subject to this penalty.
MP里面的新关键词
如果一个盗贼和一个战士对同一个敌人都使用了带有rattling的power
那么效果是－2，还是－4呢？

[brainfish]

penalty没有类型，rattling是key word不是type。
因此是-4。