Hi,
I found your detailed comparison between three of the most common messenger. I would like suggest you to add signal messenger and wire to the comparison. If you want I can contribute to the english version.
I agree that Telegram is the #1 messenger. I still think your website would be more effective and convincing if you would try to eliminate some bias by
• replacing all sources linked to one of the companies (like the telegraph blog) and instead cite credible independent news sources
• backing up claims with independent sources or removing them (e.g. I agree that the Telegram privacy policy is far more readable than WhatsApp's but I still think this should either be quantified by you somehow or, even better, by a independent tool/analysis. Same goes for the sending speed. Otherwise it just seems like your opinion instead of a fact and therefore hurts the credibility of the comparison)