There is no correlation between xpm and Win Rate. Some has higher xpm, some has higher Win Rate. Objects are grouped into clusters (marked with different colors) based on close values of xpm and Win Rate.
xpm Win Rate
Abaddon 626.13 0.5409
Alchemist 723.28 0.4831
Anti-Mage 768.43 0.4939
Arc Warden 749.97 0.5392
Axe 658.18 0.5300
Bloodseeker 715.13 0.5159
Bristleback 646.87 0.4970
Chaos Knight 668.68 0.5009
Clinkz 652.74 0.5354
Drow Ranger 689.64 0.5005
Ember Spirit 716.62 0.4721
Faceless Void 708.88 0.4751
Invoker 650.87 0.4768
Juggernaut 731.11 0.4999
Kunkka 672.41 0.4912
Legion Commander 671.52 0.5452
Lifestealer 702.15 0.4863
Luna 697.89 0.4727
Magnus 663.40 0.4815
Medusa 733.30 0.5655
Meepo 776.50 0.5398
Monkey King 669.24 0.4661
Morphling 707.35 0.4508
Muerta 698.13 0.5089
Naga Siren 705.00 0.5340
Necrophos 673.44 0.5192
Outworld Destroyer 679.49 0.4971
Pangolier 675.17 0.4692
Phantom Assassin 727.67 0.4661
Phantom Lancer 720.04 0.5283
Puck 697.82 0.4685
Queen of Pain 683.93 0.5027
Riki 748.27 0.5259
Sand King 629.88 0.5215
Shadow Fiend 714.33 0.4936
Slark 709.62 0.5098
Sniper 666.50 0.4765
Spectre 733.85 0.5321
Spirit Breaker 633.66 0.5200
Storm Spirit 701.28 0.4751
Sven 748.62 0.5029
Templar Assassin 737.87 0.4482
Terrorblade 665.88 0.4624
Timbersaw 651.24 0.4790
Tinker 723.55 0.5122
Troll Warlord 721.85 0.4934
Ursa 723.01 0.4644
Void Spirit 705.53 0.5139
Weaver 703.96 0.4876
Windranger 666.40 0.5300
Wraith King 678.50 0.5134
xpm Win Rate
Ancient Apparition 540.38 0.5324
Bane 516.68 0.4898
Bounty Hunter 559.67 0.5000
Brewmaster 609.60 0.4838
Centaur Warrunner 609.07 0.4861
Chen 463.28 0.4938
Clockwerk 529.19 0.4802
Crystal Maiden 520.11 0.5213
Dark Seer 594.93 0.5395
Dark Willow 563.48 0.4907
Dawnbreaker 613.65 0.4964
Dazzle 484.47 0.4734
Death Prophet 622.56 0.4786
Disruptor 500.36 0.5036
Earth Spirit 547.59 0.4604
Earthshaker 597.59 0.4979
Elder Titan 589.06 0.5161
Enigma 526.62 0.4637
Grimstroke 526.26 0.5053
Gyrocopter 581.06 0.4820
Hoodwink 571.75 0.4734
Huskar 632.19 0.4770
Io 488.31 0.4861
Jakiro 527.75 0.5330
Keeper of the Light 535.07 0.4724
Lich 522.82 0.5323
Lion 517.09 0.4606
Lone Druid 605.29 0.4805
Lycan 597.63 0.4798
Marci 594.11 0.4835
Mirana 555.04 0.5044
Night Stalker 629.97 0.4842
Nyx Assassin 620.62 0.5092
Ogre Magi 598.74 0.5083
Omniknight 578.25 0.5133
Oracle 492.49 0.5273
Phoenix 551.95 0.4756
Pudge 574.33 0.4932
Pugna 547.58 0.4941
Rubick 536.17 0.4572
Shadow Demon 509.89 0.4767
Shadow Shaman 508.17 0.4950
Silencer 558.74 0.5413
Skywrath Mage 555.13 0.5203
Slardar 626.74 0.4898
Snapfire 551.47 0.4627
Techies 559.00 0.5101
Tidehunter 584.30 0.4872
Treant Protector 518.17 0.5011
Underlord 585.38 0.5323
Undying 538.93 0.5325
Vengeful Spirit 526.36 0.4733
Venomancer 526.91 0.5259
Viper 629.15 0.4872
Visage 618.57 0.4959
Warlock 500.21 0.5209
Winter Wyvern 576.95 0.5047
Witch Doctor 537.57 0.5016
Zeus 625.78 0.4822
xpm Win Rate
Batrider 629.51 0.4565
Beastmaster 610.18 0.4603
Broodmother 629.89 0.4261
Doom 632.95 0.4434
Dragon Knight 625.51 0.4618
Enchantress 563.25 0.4536
Leshrac 621.28 0.4512
Lina 624.58 0.4241
Mars 596.87 0.4550
Nature's Prophet 630.17 0.4128
Primal Beast 591.06 0.4562
Razor 640.06 0.4652
Tiny 618.58 0.4436
Tusk 570.17 0.4495