Its just a bunch of words. Biden is talking about the "soul", Trump was going to make America "great again". What does these things mean? Nothing. Absolutely nothing. They are just words.
To find no difference between Trump and Biden is......weird.
Americans are sentimental and to my English ears, when I was young (early 30s.....), I found them syrupy and insincere. No. They are what they are. I'm no great expert on North American nuance and I lived in Vancouver for four years. You, old fruit, have no chance of getting it.