True, if the wattage is same, there wont be any effect but only if everything stays Ok (InshAllah).
However, chinese HID kits have wattages which usually do not match with the stickers and even 55watts is also less than 55w in actual so chances of wattage overload are less but one thing is important i.e. Malfunction. HID ballasts have very high voltage for actual functioning which is 70V plus as compared to 12V input, so if there is any malfunction due to poor build quality or absence of any surge protection circuits which chinese usually eliminate for price cuts in lower priced products, then your relay harness will act as a Cutout and protect your 3Million beauty.