There can be no such question as which language is better than another to learn. Each language is unique in itself; it is different from any other language and is loved by its native speakers or by those for whom it is their first language or mother tongue.
Yes, but, a question can be asked or framed in a slightly different manner – One can ask which of any two languages is easier to learn, or which of the two has a wider scope, or which of the two is found more enthralling by language-learning enthusiasts over the world.
There can, definitely, be answers to these questions; answers which would be more or less correct or as per the facts!
Let us draw comparisons between the following two languages: