एषः this, इह: here, देश: place, कालश्च: and time, तथा: similarly, पुरुषात् you, पुरुषम् superior, प्राप्य: came here, तथा: so also, गुणदोषावपि: even if there are de merits (in him) and merits (in you), यथा: as, तथा: it is, इह: here, भवति: seems to be.

"It seems proper for him (Vibheeshana) to come here, considering place and time and so also considering that you are superior to him (Ravana) even if there are demerits in him and merits in you."