I finally had a chance to take some comparison pictures for you. I pulled out quite a few for most polishes, except Sweet Lilac. I don't have as many for that. I haven't narrowed them down to what is the closest yet either.
From left to right: Dior Lilac Colorvision Chanel Sweet Lilac RBL Poco a Poco
From left to right Chanel Suspicious YSL Rose Baby Doll Dior Bahia Duo #2 Chanel Pink Tonic Dior Bonheur Chanel Rose Exuberant Chanel Rose Insolent
From left to right Chanel Starlet (I pulled because I remember someone asking how it compares to Chanel Lilis RBL Coral Chanel Tutti Frutti RBL Kellie Gonzo RBL (Oriental) Poppy RBL Smile
From left to right: RBL Starfish Patrick Chanel Orange Fizz Chanel Holiday Chanel Mirabella Tom Ford Coral Beach RBL Nails and Noms
Pink Tonic is a deep, saturated cool, rosy hot pink that has very slight shimmer while Tutti Frutti is a touch lighter and is a warm, red-coral with golden shimmer. PT's shimmer (along with Sweet Lilac) is hard to capture, it's easier seen IRL.