相对的，相对地，未必是“相对立”的意思，如果是相对立的情况，也可以说成“相反的”、“相反地“，而相对的，是指相对应，相对照的意思，还有一个词就叫”相对而言“，比如，相对于苹果而言，这里人更喜欢桃子。那么，肯定不能说这里的人不喜欢苹果，不能理解成喜欢苹果和喜欢桃子是相对立的事。当然，两件事在相互对照，对比而言的情况下，是有可能出现两件事完全相对立的情况的，这时，就可以说相反。

这里“相对地”是differently, otherwise的意思。 不知道你的句子来自何处。现在在中国大陆“相对地”这个词一般不会这样使用。在大陆，那里会用“相反（地）”这个词。 “相对地”意思和用法与relatively, comparatively基本相同（除了不能置于句尾）。

This word here has similar meaning to “rather” in English that is used when you want to partially negate a statement. Most commercials don’t tell you the truth. Rather they try to create an image for you to see...

For better translation, I think it means ”instead” in this sentence, therefore u may put it at the last of sentence in English. However, we use ”instead” as an adverb in a sentence in Chinese. I think we can also use ”反而” in this sentence which can convey the same message. Another situation u can apply 相對地 is to make comparison which has two meanings. One is relatively, another one is oppositely/In contrast. E.g 要精通中文很困難因為中文區分普通話和廣東話，學英文相對地比較簡單多。 It’s difficult to be proficient in Chinese as you need to differentiate Cantonese from Mandarin Chinese. In contrast, learning English is much more easy. 印刷書本十分不環保，使用電子書相對地會造成少一點浪費。 Using printed books is not environmentally friendly, it is better to use electronic books instead. I think I would tend to put 相對地 as an adverb inside a sentence because it is rather natural than as a adverb and put it at the beginning.

相对地：当你想表达前后句子是“相反”的意思时，前后两句用来“比较”，可以用。 Hope it helps!